From fb5b3dce6192265bce9b9d93ab663bdc5be8048e Mon Sep 17 00:00:00 2001 From: Xiaoyu Yao Date: Fri, 17 Aug 2018 08:01:44 -0700 Subject: [PATCH] Revert "HDFS-13790. RBF: Move ClientProtocol APIs to its own module. Contributed by Chao Sun." This reverts commit fa121eb66bc42e9cb5586f8c2e268cfdc2ed187a. --- .../federation/router/RouterRpcServer.java | 1360 +++++++++++++++-- 1 file changed, 1202 insertions(+), 158 deletions(-) diff --git a/hadoop-hdfs-project/hadoop-hdfs-rbf/src/main/java/org/apache/hadoop/hdfs/server/federation/router/RouterRpcServer.java b/hadoop-hdfs-project/hadoop-hdfs-rbf/src/main/java/org/apache/hadoop/hdfs/server/federation/router/RouterRpcServer.java index fe5499366f..29f32a665d 100644 --- a/hadoop-hdfs-project/hadoop-hdfs-rbf/src/main/java/org/apache/hadoop/hdfs/server/federation/router/RouterRpcServer.java +++ b/hadoop-hdfs-project/hadoop-hdfs-rbf/src/main/java/org/apache/hadoop/hdfs/server/federation/router/RouterRpcServer.java @@ -33,12 +33,16 @@ import java.util.ArrayList; import java.util.Collection; import java.util.EnumSet; +import java.util.HashMap; +import java.util.Iterator; import java.util.LinkedHashMap; import java.util.LinkedHashSet; +import java.util.LinkedList; import java.util.List; import java.util.Map; import java.util.Map.Entry; import java.util.Set; +import java.util.TreeMap; import org.apache.hadoop.conf.Configuration; import org.apache.hadoop.crypto.CryptoProtocolVersion; @@ -50,6 +54,7 @@ import org.apache.hadoop.fs.FileAlreadyExistsException; import org.apache.hadoop.fs.FsServerDefaults; import org.apache.hadoop.fs.Options; +import org.apache.hadoop.fs.Path; import org.apache.hadoop.fs.QuotaUsage; import org.apache.hadoop.fs.StorageType; import org.apache.hadoop.fs.XAttr; @@ -59,6 +64,7 @@ import org.apache.hadoop.fs.permission.FsAction; import org.apache.hadoop.fs.permission.FsPermission; import org.apache.hadoop.hdfs.AddBlockFlag; +import org.apache.hadoop.hdfs.DFSConfigKeys; import org.apache.hadoop.hdfs.DFSUtil; import org.apache.hadoop.hdfs.inotify.EventBatchList; import org.apache.hadoop.hdfs.protocol.AddErasureCodingPolicyResponse; @@ -87,6 +93,7 @@ import org.apache.hadoop.hdfs.protocol.LocatedBlock; import org.apache.hadoop.hdfs.protocol.LocatedBlocks; import org.apache.hadoop.hdfs.protocol.OpenFileEntry; +import org.apache.hadoop.hdfs.protocol.OpenFilesIterator; import org.apache.hadoop.hdfs.protocol.OpenFilesIterator.OpenFilesType; import org.apache.hadoop.hdfs.protocol.ReplicatedBlockStats; import org.apache.hadoop.hdfs.protocol.RollingUpgradeInfo; @@ -94,8 +101,8 @@ import org.apache.hadoop.hdfs.protocol.SnapshotDiffReportListing; import org.apache.hadoop.hdfs.protocol.SnapshottableDirectoryStatus; import org.apache.hadoop.hdfs.protocol.ZoneReencryptionStatus; -import org.apache.hadoop.hdfs.protocol.proto.NamenodeProtocolProtos.NamenodeProtocolService; import org.apache.hadoop.hdfs.protocol.proto.ClientNamenodeProtocolProtos.ClientNamenodeProtocol; +import org.apache.hadoop.hdfs.protocol.proto.NamenodeProtocolProtos.NamenodeProtocolService; import org.apache.hadoop.hdfs.protocolPB.ClientNamenodeProtocolPB; import org.apache.hadoop.hdfs.protocolPB.ClientNamenodeProtocolServerSideTranslatorPB; import org.apache.hadoop.hdfs.protocolPB.NamenodeProtocolPB; @@ -160,6 +167,11 @@ public class RouterRpcServer extends AbstractService /** Configuration for the RPC server. */ private Configuration conf; + /** Identifier for the super user. */ + private final String superUser; + /** Identifier for the super group. */ + private final String superGroup; + /** Router using this RPC server. */ private final Router router; @@ -187,10 +199,11 @@ public class RouterRpcServer extends AbstractService // Modules implementing groups of RPC calls /** Router Quota calls. */ private final Quota quotaCall; + /** Erasure coding calls. */ + private final ErasureCoding erasureCoding; /** NamenodeProtocol calls. */ private final RouterNamenodeProtocol nnProto; - /** ClientProtocol calls. */ - private final RouterClientProtocol clientProto; + /** * Construct a router RPC server. @@ -210,6 +223,12 @@ public RouterRpcServer(Configuration configuration, Router router, this.namenodeResolver = nnResolver; this.subclusterResolver = fileResolver; + // User and group for reporting + this.superUser = System.getProperty("user.name"); + this.superGroup = this.conf.get( + DFSConfigKeys.DFS_PERMISSIONS_SUPERUSERGROUP_KEY, + DFSConfigKeys.DFS_PERMISSIONS_SUPERUSERGROUP_DEFAULT); + // RPC server settings int handlerCount = this.conf.getInt(DFS_ROUTER_HANDLER_COUNT_KEY, DFS_ROUTER_HANDLER_COUNT_DEFAULT); @@ -296,8 +315,8 @@ public RouterRpcServer(Configuration configuration, Router router, // Initialize modules this.quotaCall = new Quota(this.router, this); + this.erasureCoding = new ErasureCoding(this); this.nnProto = new RouterNamenodeProtocol(this); - this.clientProto = new RouterClientProtocol(conf, this); } @Override @@ -351,13 +370,6 @@ public FileSubclusterResolver getSubclusterResolver() { return subclusterResolver; } - /** - * Get the active namenode resolver - */ - public ActiveNamenodeResolver getNamenodeResolver() { - return namenodeResolver; - } - /** * Get the RPC monitor and metrics. * @@ -399,7 +411,7 @@ public InetSocketAddress getRpcAddress() { * client requests. * @throws UnsupportedOperationException If the operation is not supported. */ - void checkOperation(OperationCategory op, boolean supported) + protected void checkOperation(OperationCategory op, boolean supported) throws StandbyException, UnsupportedOperationException { checkOperation(op); @@ -421,7 +433,7 @@ void checkOperation(OperationCategory op, boolean supported) * @throws SafeModeException If the Router is in safe mode and cannot serve * client requests. */ - void checkOperation(OperationCategory op) + protected void checkOperation(OperationCategory op) throws StandbyException { // Log the function we are currently calling. if (rpcMonitor != null) { @@ -452,44 +464,58 @@ void checkOperation(OperationCategory op) } } - /** - * Get the name of the method that is calling this function. - * - * @return Name of the method calling this function. - */ - static String getMethodName() { - final StackTraceElement[] stack = Thread.currentThread().getStackTrace(); - String methodName = stack[3].getMethodName(); - return methodName; - } - @Override // ClientProtocol public Token getDelegationToken(Text renewer) throws IOException { - return clientProto.getDelegationToken(renewer); + checkOperation(OperationCategory.WRITE, false); + return null; + } + + /** + * The the delegation token from each name service. + * @param renewer + * @return Name service -> Token. + * @throws IOException + */ + public Map> + getDelegationTokens(Text renewer) throws IOException { + checkOperation(OperationCategory.WRITE, false); + return null; } @Override // ClientProtocol public long renewDelegationToken(Token token) throws IOException { - return clientProto.renewDelegationToken(token); + checkOperation(OperationCategory.WRITE, false); + return 0; } @Override // ClientProtocol public void cancelDelegationToken(Token token) throws IOException { - clientProto.cancelDelegationToken(token); + checkOperation(OperationCategory.WRITE, false); } @Override // ClientProtocol public LocatedBlocks getBlockLocations(String src, final long offset, final long length) throws IOException { - return clientProto.getBlockLocations(src, offset, length); + checkOperation(OperationCategory.READ); + + List locations = getLocationsForPath(src, false); + RemoteMethod remoteMethod = new RemoteMethod("getBlockLocations", + new Class[] {String.class, long.class, long.class}, + new RemoteParam(), offset, length); + return (LocatedBlocks) rpcClient.invokeSequential(locations, remoteMethod, + LocatedBlocks.class, null); } @Override // ClientProtocol public FsServerDefaults getServerDefaults() throws IOException { - return clientProto.getServerDefaults(); + checkOperation(OperationCategory.READ); + + RemoteMethod method = new RemoteMethod("getServerDefaults"); + String ns = subclusterResolver.getDefaultNamespace(); + return (FsServerDefaults) rpcClient.invokeSingle(ns, method); } @Override // ClientProtocol @@ -498,8 +524,44 @@ public HdfsFileStatus create(String src, FsPermission masked, boolean createParent, short replication, long blockSize, CryptoProtocolVersion[] supportedVersions, String ecPolicyName) throws IOException { - return clientProto.create(src, masked, clientName, flag, createParent, + checkOperation(OperationCategory.WRITE); + + if (createParent && isPathAll(src)) { + int index = src.lastIndexOf(Path.SEPARATOR); + String parent = src.substring(0, index); + LOG.debug("Creating {} requires creating parent {}", src, parent); + FsPermission parentPermissions = getParentPermission(masked); + boolean success = mkdirs(parent, parentPermissions, createParent); + if (!success) { + // This shouldn't happen as mkdirs returns true or exception + LOG.error("Couldn't create parents for {}", src); + } + } + + RemoteLocation createLocation = getCreateLocation(src); + RemoteMethod method = new RemoteMethod("create", + new Class[] {String.class, FsPermission.class, String.class, + EnumSetWritable.class, boolean.class, short.class, + long.class, CryptoProtocolVersion[].class, + String.class}, + createLocation.getDest(), masked, clientName, flag, createParent, replication, blockSize, supportedVersions, ecPolicyName); + return (HdfsFileStatus) rpcClient.invokeSingle(createLocation, method); + } + + /** + * Get the permissions for the parent of a child with given permissions. + * Add implicit u+wx permission for parent. This is based on + * @{FSDirMkdirOp#addImplicitUwx}. + * @param mask The permission mask of the child. + * @return The permission mask of the parent. + */ + private static FsPermission getParentPermission(final FsPermission mask) { + FsPermission ret = new FsPermission( + mask.getUserAction().or(FsAction.WRITE_EXECUTE), + mask.getGroupAction(), + mask.getOtherAction()); + return ret; } /** @@ -510,7 +572,7 @@ public HdfsFileStatus create(String src, FsPermission masked, * @return The remote location for this file. * @throws IOException If the file has no creation location. */ - RemoteLocation getCreateLocation(final String src) + protected RemoteLocation getCreateLocation(final String src) throws IOException { final List locations = getLocationsForPath(src, true); @@ -551,45 +613,100 @@ RemoteLocation getCreateLocation(final String src) return createLocation; } + // Medium @Override // ClientProtocol public LastBlockWithStatus append(String src, final String clientName, final EnumSetWritable flag) throws IOException { - return clientProto.append(src, clientName, flag); + checkOperation(OperationCategory.WRITE); + + List locations = getLocationsForPath(src, true); + RemoteMethod method = new RemoteMethod("append", + new Class[] {String.class, String.class, EnumSetWritable.class}, + new RemoteParam(), clientName, flag); + return rpcClient.invokeSequential( + locations, method, LastBlockWithStatus.class, null); } + // Low @Override // ClientProtocol public boolean recoverLease(String src, String clientName) throws IOException { - return clientProto.recoverLease(src, clientName); + checkOperation(OperationCategory.WRITE); + + final List locations = getLocationsForPath(src, true); + RemoteMethod method = new RemoteMethod("recoverLease", + new Class[] {String.class, String.class}, new RemoteParam(), + clientName); + Object result = rpcClient.invokeSequential( + locations, method, Boolean.class, Boolean.TRUE); + return (boolean) result; } @Override // ClientProtocol public boolean setReplication(String src, short replication) throws IOException { - return clientProto.setReplication(src, replication); + checkOperation(OperationCategory.WRITE); + + List locations = getLocationsForPath(src, true); + RemoteMethod method = new RemoteMethod("setReplication", + new Class[] {String.class, short.class}, new RemoteParam(), + replication); + Object result = rpcClient.invokeSequential( + locations, method, Boolean.class, Boolean.TRUE); + return (boolean) result; } - @Override // ClientProtocol + @Override public void setStoragePolicy(String src, String policyName) throws IOException { - clientProto.setStoragePolicy(src, policyName); + checkOperation(OperationCategory.WRITE); + + List locations = getLocationsForPath(src, true); + RemoteMethod method = new RemoteMethod("setStoragePolicy", + new Class[] {String.class, String.class}, + new RemoteParam(), policyName); + rpcClient.invokeSequential(locations, method, null, null); } - @Override // ClientProtocol + @Override public BlockStoragePolicy[] getStoragePolicies() throws IOException { - return clientProto.getStoragePolicies(); + checkOperation(OperationCategory.READ); + + RemoteMethod method = new RemoteMethod("getStoragePolicies"); + String ns = subclusterResolver.getDefaultNamespace(); + return (BlockStoragePolicy[]) rpcClient.invokeSingle(ns, method); } @Override // ClientProtocol public void setPermission(String src, FsPermission permissions) throws IOException { - clientProto.setPermission(src, permissions); + checkOperation(OperationCategory.WRITE); + + final List locations = getLocationsForPath(src, true); + RemoteMethod method = new RemoteMethod("setPermission", + new Class[] {String.class, FsPermission.class}, + new RemoteParam(), permissions); + if (isPathAll(src)) { + rpcClient.invokeConcurrent(locations, method); + } else { + rpcClient.invokeSequential(locations, method); + } } @Override // ClientProtocol public void setOwner(String src, String username, String groupname) throws IOException { - clientProto.setOwner(src, username, groupname); + checkOperation(OperationCategory.WRITE); + + final List locations = getLocationsForPath(src, true); + RemoteMethod method = new RemoteMethod("setOwner", + new Class[] {String.class, String.class, String.class}, + new RemoteParam(), username, groupname); + if (isPathAll(src)) { + rpcClient.invokeConcurrent(locations, method); + } else { + rpcClient.invokeSequential(locations, method); + } } /** @@ -601,8 +718,18 @@ public LocatedBlock addBlock(String src, String clientName, ExtendedBlock previous, DatanodeInfo[] excludedNodes, long fileId, String[] favoredNodes, EnumSet addBlockFlags) throws IOException { - return clientProto.addBlock(src, clientName, previous, excludedNodes, - fileId, favoredNodes, addBlockFlags); + checkOperation(OperationCategory.WRITE); + + final List locations = getLocationsForPath(src, true); + RemoteMethod method = new RemoteMethod("addBlock", + new Class[] {String.class, String.class, ExtendedBlock.class, + DatanodeInfo[].class, long.class, String[].class, + EnumSet.class}, + new RemoteParam(), clientName, previous, excludedNodes, fileId, + favoredNodes, addBlockFlags); + // TODO verify the excludedNodes and favoredNodes are acceptable to this NN + return (LocatedBlock) rpcClient.invokeSequential( + locations, method, LocatedBlock.class, null); } /** @@ -615,26 +742,55 @@ public LocatedBlock getAdditionalDatanode(final String src, final long fileId, final String[] existingStorageIDs, final DatanodeInfo[] excludes, final int numAdditionalNodes, final String clientName) throws IOException { - return clientProto.getAdditionalDatanode(src, fileId, blk, existings, - existingStorageIDs, excludes, numAdditionalNodes, clientName); + checkOperation(OperationCategory.READ); + + final List locations = getLocationsForPath(src, false); + RemoteMethod method = new RemoteMethod("getAdditionalDatanode", + new Class[] {String.class, long.class, ExtendedBlock.class, + DatanodeInfo[].class, String[].class, + DatanodeInfo[].class, int.class, String.class}, + new RemoteParam(), fileId, blk, existings, existingStorageIDs, excludes, + numAdditionalNodes, clientName); + return (LocatedBlock) rpcClient.invokeSequential( + locations, method, LocatedBlock.class, null); } @Override // ClientProtocol public void abandonBlock(ExtendedBlock b, long fileId, String src, String holder) throws IOException { - clientProto.abandonBlock(b, fileId, src, holder); + checkOperation(OperationCategory.WRITE); + + RemoteMethod method = new RemoteMethod("abandonBlock", + new Class[] {ExtendedBlock.class, long.class, String.class, + String.class}, + b, fileId, new RemoteParam(), holder); + rpcClient.invokeSingle(b, method); } @Override // ClientProtocol public boolean complete(String src, String clientName, ExtendedBlock last, long fileId) throws IOException { - return clientProto.complete(src, clientName, last, fileId); + checkOperation(OperationCategory.WRITE); + + final List locations = getLocationsForPath(src, true); + RemoteMethod method = new RemoteMethod("complete", + new Class[] {String.class, String.class, ExtendedBlock.class, + long.class}, + new RemoteParam(), clientName, last, fileId); + // Complete can return true/false, so don't expect a result + return ((Boolean) rpcClient.invokeSequential( + locations, method, Boolean.class, null)).booleanValue(); } @Override // ClientProtocol public LocatedBlock updateBlockForPipeline( ExtendedBlock block, String clientName) throws IOException { - return clientProto.updateBlockForPipeline(block, clientName); + checkOperation(OperationCategory.WRITE); + + RemoteMethod method = new RemoteMethod("updateBlockForPipeline", + new Class[] {ExtendedBlock.class, String.class}, + block, clientName); + return (LocatedBlock) rpcClient.invokeSingle(block, method); } /** @@ -645,91 +801,462 @@ public LocatedBlock updateBlockForPipeline( public void updatePipeline(String clientName, ExtendedBlock oldBlock, ExtendedBlock newBlock, DatanodeID[] newNodes, String[] newStorageIDs) throws IOException { - clientProto.updatePipeline(clientName, oldBlock, newBlock, newNodes, - newStorageIDs); + checkOperation(OperationCategory.WRITE); + + RemoteMethod method = new RemoteMethod("updatePipeline", + new Class[] {String.class, ExtendedBlock.class, ExtendedBlock.class, + DatanodeID[].class, String[].class}, + clientName, oldBlock, newBlock, newNodes, newStorageIDs); + rpcClient.invokeSingle(oldBlock, method); } @Override // ClientProtocol public long getPreferredBlockSize(String src) throws IOException { - return clientProto.getPreferredBlockSize(src); + checkOperation(OperationCategory.READ); + + final List locations = getLocationsForPath(src, true); + RemoteMethod method = new RemoteMethod("getPreferredBlockSize", + new Class[] {String.class}, new RemoteParam()); + return ((Long) rpcClient.invokeSequential( + locations, method, Long.class, null)).longValue(); + } + + /** + * Determines combinations of eligible src/dst locations for a rename. A + * rename cannot change the namespace. Renames are only allowed if there is an + * eligible dst location in the same namespace as the source. + * + * @param srcLocations List of all potential source destinations where the + * path may be located. On return this list is trimmed to include + * only the paths that have corresponding destinations in the same + * namespace. + * @param dst The destination path + * @return A map of all eligible source namespaces and their corresponding + * replacement value. + * @throws IOException If the dst paths could not be determined. + */ + private RemoteParam getRenameDestinations( + final List srcLocations, final String dst) + throws IOException { + + final List dstLocations = getLocationsForPath(dst, true); + final Map dstMap = new HashMap<>(); + + Iterator iterator = srcLocations.iterator(); + while (iterator.hasNext()) { + RemoteLocation srcLocation = iterator.next(); + RemoteLocation eligibleDst = + getFirstMatchingLocation(srcLocation, dstLocations); + if (eligibleDst != null) { + // Use this dst for this source location + dstMap.put(srcLocation, eligibleDst.getDest()); + } else { + // This src destination is not valid, remove from the source list + iterator.remove(); + } + } + return new RemoteParam(dstMap); + } + + /** + * Get first matching location. + * + * @param location Location we are looking for. + * @param locations List of locations. + * @return The first matchin location in the list. + */ + private RemoteLocation getFirstMatchingLocation(RemoteLocation location, + List locations) { + for (RemoteLocation loc : locations) { + if (loc.getNameserviceId().equals(location.getNameserviceId())) { + // Return first matching location + return loc; + } + } + return null; } @Deprecated @Override // ClientProtocol public boolean rename(final String src, final String dst) throws IOException { - return clientProto.rename(src, dst); + checkOperation(OperationCategory.WRITE); + + final List srcLocations = + getLocationsForPath(src, true, false); + // srcLocations may be trimmed by getRenameDestinations() + final List locs = new LinkedList<>(srcLocations); + RemoteParam dstParam = getRenameDestinations(locs, dst); + if (locs.isEmpty()) { + throw new IOException( + "Rename of " + src + " to " + dst + " is not allowed," + + " no eligible destination in the same namespace was found."); + } + RemoteMethod method = new RemoteMethod("rename", + new Class[] {String.class, String.class}, + new RemoteParam(), dstParam); + return ((Boolean) rpcClient.invokeSequential( + locs, method, Boolean.class, Boolean.TRUE)).booleanValue(); } @Override // ClientProtocol public void rename2(final String src, final String dst, final Options.Rename... options) throws IOException { - clientProto.rename2(src, dst, options); + checkOperation(OperationCategory.WRITE); + + final List srcLocations = + getLocationsForPath(src, true, false); + // srcLocations may be trimmed by getRenameDestinations() + final List locs = new LinkedList<>(srcLocations); + RemoteParam dstParam = getRenameDestinations(locs, dst); + if (locs.isEmpty()) { + throw new IOException( + "Rename of " + src + " to " + dst + " is not allowed," + + " no eligible destination in the same namespace was found."); + } + RemoteMethod method = new RemoteMethod("rename2", + new Class[] {String.class, String.class, options.getClass()}, + new RemoteParam(), dstParam, options); + rpcClient.invokeSequential(locs, method, null, null); } @Override // ClientProtocol public void concat(String trg, String[] src) throws IOException { - clientProto.concat(trg, src); + checkOperation(OperationCategory.WRITE); + + // See if the src and target files are all in the same namespace + LocatedBlocks targetBlocks = getBlockLocations(trg, 0, 1); + if (targetBlocks == null) { + throw new IOException("Cannot locate blocks for target file - " + trg); + } + LocatedBlock lastLocatedBlock = targetBlocks.getLastLocatedBlock(); + String targetBlockPoolId = lastLocatedBlock.getBlock().getBlockPoolId(); + for (String source : src) { + LocatedBlocks sourceBlocks = getBlockLocations(source, 0, 1); + if (sourceBlocks == null) { + throw new IOException( + "Cannot located blocks for source file " + source); + } + String sourceBlockPoolId = + sourceBlocks.getLastLocatedBlock().getBlock().getBlockPoolId(); + if (!sourceBlockPoolId.equals(targetBlockPoolId)) { + throw new IOException("Cannot concatenate source file " + source + + " because it is located in a different namespace" + + " with block pool id " + sourceBlockPoolId + + " from the target file with block pool id " + + targetBlockPoolId); + } + } + + // Find locations in the matching namespace. + final RemoteLocation targetDestination = + getLocationForPath(trg, true, targetBlockPoolId); + String[] sourceDestinations = new String[src.length]; + for (int i = 0; i < src.length; i++) { + String sourceFile = src[i]; + RemoteLocation location = + getLocationForPath(sourceFile, true, targetBlockPoolId); + sourceDestinations[i] = location.getDest(); + } + // Invoke + RemoteMethod method = new RemoteMethod("concat", + new Class[] {String.class, String[].class}, + targetDestination.getDest(), sourceDestinations); + rpcClient.invokeSingle(targetDestination, method); } @Override // ClientProtocol public boolean truncate(String src, long newLength, String clientName) throws IOException { - return clientProto.truncate(src, newLength, clientName); + checkOperation(OperationCategory.WRITE); + + final List locations = getLocationsForPath(src, true); + RemoteMethod method = new RemoteMethod("truncate", + new Class[] {String.class, long.class, String.class}, + new RemoteParam(), newLength, clientName); + return ((Boolean) rpcClient.invokeSequential(locations, method, + Boolean.class, Boolean.TRUE)).booleanValue(); } @Override // ClientProtocol public boolean delete(String src, boolean recursive) throws IOException { - return clientProto.delete(src, recursive); + checkOperation(OperationCategory.WRITE); + + final List locations = + getLocationsForPath(src, true, false); + RemoteMethod method = new RemoteMethod("delete", + new Class[] {String.class, boolean.class}, new RemoteParam(), + recursive); + if (isPathAll(src)) { + return rpcClient.invokeAll(locations, method); + } else { + return rpcClient.invokeSequential(locations, method, + Boolean.class, Boolean.TRUE).booleanValue(); + } } @Override // ClientProtocol public boolean mkdirs(String src, FsPermission masked, boolean createParent) throws IOException { - return clientProto.mkdirs(src, masked, createParent); + checkOperation(OperationCategory.WRITE); + + final List locations = getLocationsForPath(src, true); + RemoteMethod method = new RemoteMethod("mkdirs", + new Class[] {String.class, FsPermission.class, boolean.class}, + new RemoteParam(), masked, createParent); + + // Create in all locations + if (isPathAll(src)) { + return rpcClient.invokeAll(locations, method); + } + + if (locations.size() > 1) { + // Check if this directory already exists + try { + HdfsFileStatus fileStatus = getFileInfo(src); + if (fileStatus != null) { + // When existing, the NN doesn't return an exception; return true + return true; + } + } catch (IOException ioe) { + // Can't query if this file exists or not. + LOG.error("Error requesting file info for path {} while proxing mkdirs", + src, ioe); + } + } + + RemoteLocation firstLocation = locations.get(0); + return ((Boolean) rpcClient.invokeSingle(firstLocation, method)) + .booleanValue(); } @Override // ClientProtocol public void renewLease(String clientName) throws IOException { - clientProto.renewLease(clientName); + checkOperation(OperationCategory.WRITE); + + RemoteMethod method = new RemoteMethod("renewLease", + new Class[] {String.class}, clientName); + Set nss = namenodeResolver.getNamespaces(); + rpcClient.invokeConcurrent(nss, method, false, false); } @Override // ClientProtocol public DirectoryListing getListing(String src, byte[] startAfter, boolean needLocation) throws IOException { - return clientProto.getListing(src, startAfter, needLocation); + checkOperation(OperationCategory.READ); + + // Locate the dir and fetch the listing + final List locations = getLocationsForPath(src, true); + RemoteMethod method = new RemoteMethod("getListing", + new Class[] {String.class, startAfter.getClass(), boolean.class}, + new RemoteParam(), startAfter, needLocation); + Map listings = + rpcClient.invokeConcurrent( + locations, method, false, false, DirectoryListing.class); + + Map nnListing = new TreeMap<>(); + int totalRemainingEntries = 0; + int remainingEntries = 0; + boolean namenodeListingExists = false; + if (listings != null) { + // Check the subcluster listing with the smallest name + String lastName = null; + for (Entry entry : + listings.entrySet()) { + RemoteLocation location = entry.getKey(); + DirectoryListing listing = entry.getValue(); + if (listing == null) { + LOG.debug("Cannot get listing from {}", location); + } else { + totalRemainingEntries += listing.getRemainingEntries(); + HdfsFileStatus[] partialListing = listing.getPartialListing(); + int length = partialListing.length; + if (length > 0) { + HdfsFileStatus lastLocalEntry = partialListing[length-1]; + String lastLocalName = lastLocalEntry.getLocalName(); + if (lastName == null || lastName.compareTo(lastLocalName) > 0) { + lastName = lastLocalName; + } + } + } + } + + // Add existing entries + for (Object value : listings.values()) { + DirectoryListing listing = (DirectoryListing) value; + if (listing != null) { + namenodeListingExists = true; + for (HdfsFileStatus file : listing.getPartialListing()) { + String filename = file.getLocalName(); + if (totalRemainingEntries > 0 && filename.compareTo(lastName) > 0) { + // Discarding entries further than the lastName + remainingEntries++; + } else { + nnListing.put(filename, file); + } + } + remainingEntries += listing.getRemainingEntries(); + } + } + } + + // Add mount points at this level in the tree + final List children = subclusterResolver.getMountPoints(src); + if (children != null) { + // Get the dates for each mount point + Map dates = getMountPointDates(src); + + // Create virtual folder with the mount name + for (String child : children) { + long date = 0; + if (dates != null && dates.containsKey(child)) { + date = dates.get(child); + } + // TODO add number of children + HdfsFileStatus dirStatus = getMountPointStatus(child, 0, date); + + // This may overwrite existing listing entries with the mount point + // TODO don't add if already there? + nnListing.put(child, dirStatus); + } + } + + if (!namenodeListingExists && nnListing.size() == 0) { + // NN returns a null object if the directory cannot be found and has no + // listing. If we didn't retrieve any NN listing data, and there are no + // mount points here, return null. + return null; + } + + // Generate combined listing + HdfsFileStatus[] combinedData = new HdfsFileStatus[nnListing.size()]; + combinedData = nnListing.values().toArray(combinedData); + return new DirectoryListing(combinedData, remainingEntries); } @Override // ClientProtocol public HdfsFileStatus getFileInfo(String src) throws IOException { - return clientProto.getFileInfo(src); + checkOperation(OperationCategory.READ); + + final List locations = getLocationsForPath(src, false); + RemoteMethod method = new RemoteMethod("getFileInfo", + new Class[] {String.class}, new RemoteParam()); + + HdfsFileStatus ret = null; + // If it's a directory, we check in all locations + if (isPathAll(src)) { + ret = getFileInfoAll(locations, method); + } else { + // Check for file information sequentially + ret = (HdfsFileStatus) rpcClient.invokeSequential( + locations, method, HdfsFileStatus.class, null); + } + + // If there is no real path, check mount points + if (ret == null) { + List children = subclusterResolver.getMountPoints(src); + if (children != null && !children.isEmpty()) { + Map dates = getMountPointDates(src); + long date = 0; + if (dates != null && dates.containsKey(src)) { + date = dates.get(src); + } + ret = getMountPointStatus(src, children.size(), date); + } + } + + return ret; + } + + /** + * Get the file info from all the locations. + * + * @param locations Locations to check. + * @param method The file information method to run. + * @return The first file info if it's a file, the directory if it's + * everywhere. + * @throws IOException If all the locations throw an exception. + */ + private HdfsFileStatus getFileInfoAll(final List locations, + final RemoteMethod method) throws IOException { + + // Get the file info from everybody + Map results = + rpcClient.invokeConcurrent(locations, method, HdfsFileStatus.class); + + // We return the first file + HdfsFileStatus dirStatus = null; + for (RemoteLocation loc : locations) { + HdfsFileStatus fileStatus = results.get(loc); + if (fileStatus != null) { + if (!fileStatus.isDirectory()) { + return fileStatus; + } else if (dirStatus == null) { + dirStatus = fileStatus; + } + } + } + return dirStatus; } @Override // ClientProtocol public boolean isFileClosed(String src) throws IOException { - return clientProto.isFileClosed(src); + checkOperation(OperationCategory.READ); + + final List locations = getLocationsForPath(src, false); + RemoteMethod method = new RemoteMethod("isFileClosed", + new Class[] {String.class}, new RemoteParam()); + return ((Boolean) rpcClient.invokeSequential( + locations, method, Boolean.class, Boolean.TRUE)).booleanValue(); } @Override // ClientProtocol public HdfsFileStatus getFileLinkInfo(String src) throws IOException { - return clientProto.getFileLinkInfo(src); + checkOperation(OperationCategory.READ); + + final List locations = getLocationsForPath(src, false); + RemoteMethod method = new RemoteMethod("getFileLinkInfo", + new Class[] {String.class}, new RemoteParam()); + return (HdfsFileStatus) rpcClient.invokeSequential( + locations, method, HdfsFileStatus.class, null); } - @Override // ClientProtocol + @Override public HdfsLocatedFileStatus getLocatedFileInfo(String src, boolean needBlockToken) throws IOException { - return clientProto.getLocatedFileInfo(src, needBlockToken); + checkOperation(OperationCategory.READ); + final List locations = getLocationsForPath(src, false); + RemoteMethod method = new RemoteMethod("getLocatedFileInfo", + new Class[] {String.class, boolean.class}, new RemoteParam(), + Boolean.valueOf(needBlockToken)); + return (HdfsLocatedFileStatus) rpcClient.invokeSequential( + locations, method, HdfsFileStatus.class, null); } @Override // ClientProtocol public long[] getStats() throws IOException { - return clientProto.getStats(); + checkOperation(OperationCategory.UNCHECKED); + + RemoteMethod method = new RemoteMethod("getStats"); + Set nss = namenodeResolver.getNamespaces(); + Map results = + rpcClient.invokeConcurrent(nss, method, true, false, long[].class); + long[] combinedData = new long[STATS_ARRAY_LENGTH]; + for (long[] data : results.values()) { + for (int i = 0; i < combinedData.length && i < data.length; i++) { + if (data[i] >= 0) { + combinedData[i] += data[i]; + } + } + } + return combinedData; } @Override // ClientProtocol public DatanodeInfo[] getDatanodeReport(DatanodeReportType type) throws IOException { - return clientProto.getDatanodeReport(type); + checkOperation(OperationCategory.UNCHECKED); + return getDatanodeReport(type, true, 0); } /** @@ -778,7 +1305,29 @@ public DatanodeInfo[] getDatanodeReport( @Override // ClientProtocol public DatanodeStorageReport[] getDatanodeStorageReport( DatanodeReportType type) throws IOException { - return clientProto.getDatanodeStorageReport(type); + checkOperation(OperationCategory.UNCHECKED); + + Map dnSubcluster = + getDatanodeStorageReportMap(type); + + // Avoid repeating machines in multiple subclusters + Map datanodesMap = new LinkedHashMap<>(); + for (DatanodeStorageReport[] dns : dnSubcluster.values()) { + for (DatanodeStorageReport dn : dns) { + DatanodeInfo dnInfo = dn.getDatanodeInfo(); + String nodeId = dnInfo.getXferAddr(); + if (!datanodesMap.containsKey(nodeId)) { + datanodesMap.put(nodeId, dn); + } + // TODO merge somehow, right now it just takes the first one + } + } + + Collection datanodes = datanodesMap.values(); + DatanodeStorageReport[] combinedData = + new DatanodeStorageReport[datanodes.size()]; + combinedData = datanodes.toArray(combinedData); + return combinedData; } /** @@ -811,388 +1360,740 @@ public Map getDatanodeStorageReportMap( @Override // ClientProtocol public boolean setSafeMode(SafeModeAction action, boolean isChecked) throws IOException { - return clientProto.setSafeMode(action, isChecked); + checkOperation(OperationCategory.WRITE); + + // Set safe mode in all the name spaces + RemoteMethod method = new RemoteMethod("setSafeMode", + new Class[] {SafeModeAction.class, boolean.class}, + action, isChecked); + Set nss = namenodeResolver.getNamespaces(); + Map results = + rpcClient.invokeConcurrent( + nss, method, true, !isChecked, Boolean.class); + + // We only report true if all the name space are in safe mode + int numSafemode = 0; + for (boolean safemode : results.values()) { + if (safemode) { + numSafemode++; + } + } + return numSafemode == results.size(); } @Override // ClientProtocol public boolean restoreFailedStorage(String arg) throws IOException { - return clientProto.restoreFailedStorage(arg); + checkOperation(OperationCategory.UNCHECKED); + + RemoteMethod method = new RemoteMethod("restoreFailedStorage", + new Class[] {String.class}, arg); + final Set nss = namenodeResolver.getNamespaces(); + Map ret = + rpcClient.invokeConcurrent(nss, method, true, false, Boolean.class); + + boolean success = true; + for (boolean s : ret.values()) { + if (!s) { + success = false; + break; + } + } + return success; } @Override // ClientProtocol public boolean saveNamespace(long timeWindow, long txGap) throws IOException { - return clientProto.saveNamespace(timeWindow, txGap); + checkOperation(OperationCategory.UNCHECKED); + + RemoteMethod method = new RemoteMethod("saveNamespace", + new Class[] {Long.class, Long.class}, timeWindow, txGap); + final Set nss = namenodeResolver.getNamespaces(); + Map ret = + rpcClient.invokeConcurrent(nss, method, true, false, boolean.class); + + boolean success = true; + for (boolean s : ret.values()) { + if (!s) { + success = false; + break; + } + } + return success; } @Override // ClientProtocol public long rollEdits() throws IOException { - return clientProto.rollEdits(); + checkOperation(OperationCategory.WRITE); + + RemoteMethod method = new RemoteMethod("rollEdits", new Class[] {}); + final Set nss = namenodeResolver.getNamespaces(); + Map ret = + rpcClient.invokeConcurrent(nss, method, true, false, long.class); + + // Return the maximum txid + long txid = 0; + for (long t : ret.values()) { + if (t > txid) { + txid = t; + } + } + return txid; } @Override // ClientProtocol public void refreshNodes() throws IOException { - clientProto.refreshNodes(); + checkOperation(OperationCategory.UNCHECKED); + + RemoteMethod method = new RemoteMethod("refreshNodes", new Class[] {}); + final Set nss = namenodeResolver.getNamespaces(); + rpcClient.invokeConcurrent(nss, method, true, true); } @Override // ClientProtocol public void finalizeUpgrade() throws IOException { - clientProto.finalizeUpgrade(); + checkOperation(OperationCategory.UNCHECKED); + + RemoteMethod method = new RemoteMethod("finalizeUpgrade", + new Class[] {}); + final Set nss = namenodeResolver.getNamespaces(); + rpcClient.invokeConcurrent(nss, method, true, false); } @Override // ClientProtocol public boolean upgradeStatus() throws IOException { - return clientProto.upgradeStatus(); + String methodName = getMethodName(); + throw new UnsupportedOperationException( + "Operation \"" + methodName + "\" is not supported"); } @Override // ClientProtocol public RollingUpgradeInfo rollingUpgrade(RollingUpgradeAction action) throws IOException { - return clientProto.rollingUpgrade(action); + checkOperation(OperationCategory.READ); + + RemoteMethod method = new RemoteMethod("rollingUpgrade", + new Class[] {RollingUpgradeAction.class}, action); + final Set nss = namenodeResolver.getNamespaces(); + Map ret = + rpcClient.invokeConcurrent( + nss, method, true, false, RollingUpgradeInfo.class); + + // Return the first rolling upgrade info + RollingUpgradeInfo info = null; + for (RollingUpgradeInfo infoNs : ret.values()) { + if (info == null && infoNs != null) { + info = infoNs; + } + } + return info; } @Override // ClientProtocol public void metaSave(String filename) throws IOException { - clientProto.metaSave(filename); + checkOperation(OperationCategory.UNCHECKED); + + RemoteMethod method = new RemoteMethod("metaSave", + new Class[] {String.class}, filename); + final Set nss = namenodeResolver.getNamespaces(); + rpcClient.invokeConcurrent(nss, method, true, false); } @Override // ClientProtocol public CorruptFileBlocks listCorruptFileBlocks(String path, String cookie) throws IOException { - return clientProto.listCorruptFileBlocks(path, cookie); + checkOperation(OperationCategory.READ); + + final List locations = getLocationsForPath(path, false); + RemoteMethod method = new RemoteMethod("listCorruptFileBlocks", + new Class[] {String.class, String.class}, + new RemoteParam(), cookie); + return (CorruptFileBlocks) rpcClient.invokeSequential( + locations, method, CorruptFileBlocks.class, null); } @Override // ClientProtocol public void setBalancerBandwidth(long bandwidth) throws IOException { - clientProto.setBalancerBandwidth(bandwidth); + checkOperation(OperationCategory.UNCHECKED); + + RemoteMethod method = new RemoteMethod("setBalancerBandwidth", + new Class[] {Long.class}, bandwidth); + final Set nss = namenodeResolver.getNamespaces(); + rpcClient.invokeConcurrent(nss, method, true, false); } @Override // ClientProtocol public ContentSummary getContentSummary(String path) throws IOException { - return clientProto.getContentSummary(path); + checkOperation(OperationCategory.READ); + + // Get the summaries from regular files + Collection summaries = new LinkedList<>(); + FileNotFoundException notFoundException = null; + try { + final List locations = getLocationsForPath(path, false); + RemoteMethod method = new RemoteMethod("getContentSummary", + new Class[] {String.class}, new RemoteParam()); + Map results = + rpcClient.invokeConcurrent( + locations, method, false, false, ContentSummary.class); + summaries.addAll(results.values()); + } catch (FileNotFoundException e) { + notFoundException = e; + } + + // Add mount points at this level in the tree + final List children = subclusterResolver.getMountPoints(path); + if (children != null) { + for (String child : children) { + Path childPath = new Path(path, child); + try { + ContentSummary mountSummary = getContentSummary(childPath.toString()); + if (mountSummary != null) { + summaries.add(mountSummary); + } + } catch (Exception e) { + LOG.error("Cannot get content summary for mount {}: {}", + childPath, e.getMessage()); + } + } + } + + // Throw original exception if no original nor mount points + if (summaries.isEmpty() && notFoundException != null) { + throw notFoundException; + } + + return aggregateContentSummary(summaries); + } + + /** + * Aggregate content summaries for each subcluster. + * + * @param summaries Collection of individual summaries. + * @return Aggregated content summary. + */ + private ContentSummary aggregateContentSummary( + Collection summaries) { + if (summaries.size() == 1) { + return summaries.iterator().next(); + } + + long length = 0; + long fileCount = 0; + long directoryCount = 0; + long quota = 0; + long spaceConsumed = 0; + long spaceQuota = 0; + + for (ContentSummary summary : summaries) { + length += summary.getLength(); + fileCount += summary.getFileCount(); + directoryCount += summary.getDirectoryCount(); + quota += summary.getQuota(); + spaceConsumed += summary.getSpaceConsumed(); + spaceQuota += summary.getSpaceQuota(); + } + + ContentSummary ret = new ContentSummary.Builder() + .length(length) + .fileCount(fileCount) + .directoryCount(directoryCount) + .quota(quota) + .spaceConsumed(spaceConsumed) + .spaceQuota(spaceQuota) + .build(); + return ret; } @Override // ClientProtocol public void fsync(String src, long fileId, String clientName, long lastBlockLength) throws IOException { - clientProto.fsync(src, fileId, clientName, lastBlockLength); + checkOperation(OperationCategory.WRITE); + + final List locations = getLocationsForPath(src, true); + RemoteMethod method = new RemoteMethod("fsync", + new Class[] {String.class, long.class, String.class, long.class }, + new RemoteParam(), fileId, clientName, lastBlockLength); + rpcClient.invokeSequential(locations, method); } @Override // ClientProtocol public void setTimes(String src, long mtime, long atime) throws IOException { - clientProto.setTimes(src, mtime, atime); + checkOperation(OperationCategory.WRITE); + + final List locations = getLocationsForPath(src, true); + RemoteMethod method = new RemoteMethod("setTimes", + new Class[] {String.class, long.class, long.class}, + new RemoteParam(), mtime, atime); + rpcClient.invokeSequential(locations, method); } @Override // ClientProtocol public void createSymlink(String target, String link, FsPermission dirPerms, boolean createParent) throws IOException { - clientProto.createSymlink(target, link, dirPerms, createParent); + checkOperation(OperationCategory.WRITE); + + // TODO Verify that the link location is in the same NS as the targets + final List targetLocations = + getLocationsForPath(target, true); + final List linkLocations = + getLocationsForPath(link, true); + RemoteLocation linkLocation = linkLocations.get(0); + RemoteMethod method = new RemoteMethod("createSymlink", + new Class[] {String.class, String.class, FsPermission.class, + boolean.class}, + new RemoteParam(), linkLocation.getDest(), dirPerms, createParent); + rpcClient.invokeSequential(targetLocations, method); } @Override // ClientProtocol public String getLinkTarget(String path) throws IOException { - return clientProto.getLinkTarget(path); + checkOperation(OperationCategory.READ); + + final List locations = getLocationsForPath(path, true); + RemoteMethod method = new RemoteMethod("getLinkTarget", + new Class[] {String.class}, new RemoteParam()); + return (String) rpcClient.invokeSequential( + locations, method, String.class, null); } @Override // Client Protocol public void allowSnapshot(String snapshotRoot) throws IOException { - clientProto.allowSnapshot(snapshotRoot); + checkOperation(OperationCategory.WRITE, false); } @Override // Client Protocol public void disallowSnapshot(String snapshot) throws IOException { - clientProto.disallowSnapshot(snapshot); + checkOperation(OperationCategory.WRITE, false); } @Override // ClientProtocol public void renameSnapshot(String snapshotRoot, String snapshotOldName, String snapshotNewName) throws IOException { - clientProto.renameSnapshot(snapshotRoot, snapshotOldName, snapshotNewName); + checkOperation(OperationCategory.WRITE, false); } @Override // Client Protocol public SnapshottableDirectoryStatus[] getSnapshottableDirListing() throws IOException { - return clientProto.getSnapshottableDirListing(); + checkOperation(OperationCategory.READ, false); + return null; } @Override // ClientProtocol public SnapshotDiffReport getSnapshotDiffReport(String snapshotRoot, String earlierSnapshotName, String laterSnapshotName) throws IOException { - return clientProto.getSnapshotDiffReport( - snapshotRoot, earlierSnapshotName, laterSnapshotName); + checkOperation(OperationCategory.READ, false); + return null; } @Override // ClientProtocol public SnapshotDiffReportListing getSnapshotDiffReportListing( String snapshotRoot, String earlierSnapshotName, String laterSnapshotName, byte[] startPath, int index) throws IOException { - return clientProto.getSnapshotDiffReportListing(snapshotRoot, - earlierSnapshotName, laterSnapshotName, startPath, index); + checkOperation(OperationCategory.READ, false); + return null; } @Override // ClientProtocol public long addCacheDirective(CacheDirectiveInfo path, EnumSet flags) throws IOException { - return clientProto.addCacheDirective(path, flags); + checkOperation(OperationCategory.WRITE, false); + return 0; } @Override // ClientProtocol public void modifyCacheDirective(CacheDirectiveInfo directive, EnumSet flags) throws IOException { - clientProto.modifyCacheDirective(directive, flags); + checkOperation(OperationCategory.WRITE, false); } @Override // ClientProtocol public void removeCacheDirective(long id) throws IOException { - clientProto.removeCacheDirective(id); + checkOperation(OperationCategory.WRITE, false); } @Override // ClientProtocol public BatchedEntries listCacheDirectives( long prevId, CacheDirectiveInfo filter) throws IOException { - return clientProto.listCacheDirectives(prevId, filter); + checkOperation(OperationCategory.READ, false); + return null; } @Override // ClientProtocol public void addCachePool(CachePoolInfo info) throws IOException { - clientProto.addCachePool(info); + checkOperation(OperationCategory.WRITE, false); } @Override // ClientProtocol public void modifyCachePool(CachePoolInfo info) throws IOException { - clientProto.modifyCachePool(info); + checkOperation(OperationCategory.WRITE, false); } @Override // ClientProtocol public void removeCachePool(String cachePoolName) throws IOException { - clientProto.removeCachePool(cachePoolName); + checkOperation(OperationCategory.WRITE, false); } @Override // ClientProtocol public BatchedEntries listCachePools(String prevKey) throws IOException { - return clientProto.listCachePools(prevKey); + checkOperation(OperationCategory.READ, false); + return null; } @Override // ClientProtocol public void modifyAclEntries(String src, List aclSpec) throws IOException { - clientProto.modifyAclEntries(src, aclSpec); + checkOperation(OperationCategory.WRITE); + + // TODO handle virtual directories + final List locations = getLocationsForPath(src, true); + RemoteMethod method = new RemoteMethod("modifyAclEntries", + new Class[] {String.class, List.class}, + new RemoteParam(), aclSpec); + rpcClient.invokeSequential(locations, method, null, null); } @Override // ClienProtocol public void removeAclEntries(String src, List aclSpec) throws IOException { - clientProto.removeAclEntries(src, aclSpec); + checkOperation(OperationCategory.WRITE); + + // TODO handle virtual directories + final List locations = getLocationsForPath(src, true); + RemoteMethod method = new RemoteMethod("removeAclEntries", + new Class[] {String.class, List.class}, + new RemoteParam(), aclSpec); + rpcClient.invokeSequential(locations, method, null, null); } @Override // ClientProtocol public void removeDefaultAcl(String src) throws IOException { - clientProto.removeDefaultAcl(src); + checkOperation(OperationCategory.WRITE); + + // TODO handle virtual directories + final List locations = getLocationsForPath(src, true); + RemoteMethod method = new RemoteMethod("removeDefaultAcl", + new Class[] {String.class}, new RemoteParam()); + rpcClient.invokeSequential(locations, method); } @Override // ClientProtocol public void removeAcl(String src) throws IOException { - clientProto.removeAcl(src); + checkOperation(OperationCategory.WRITE); + + // TODO handle virtual directories + final List locations = getLocationsForPath(src, true); + RemoteMethod method = new RemoteMethod("removeAcl", + new Class[] {String.class}, new RemoteParam()); + rpcClient.invokeSequential(locations, method); } @Override // ClientProtocol public void setAcl(String src, List aclSpec) throws IOException { - clientProto.setAcl(src, aclSpec); + checkOperation(OperationCategory.WRITE); + + // TODO handle virtual directories + final List locations = getLocationsForPath(src, true); + RemoteMethod method = new RemoteMethod( + "setAcl", new Class[] {String.class, List.class}, + new RemoteParam(), aclSpec); + rpcClient.invokeSequential(locations, method); } @Override // ClientProtocol public AclStatus getAclStatus(String src) throws IOException { - return clientProto.getAclStatus(src); + checkOperation(OperationCategory.READ); + + // TODO handle virtual directories + final List locations = getLocationsForPath(src, false); + RemoteMethod method = new RemoteMethod("getAclStatus", + new Class[] {String.class}, new RemoteParam()); + return (AclStatus) rpcClient.invokeSequential( + locations, method, AclStatus.class, null); } @Override // ClientProtocol public void createEncryptionZone(String src, String keyName) throws IOException { - clientProto.createEncryptionZone(src, keyName); + checkOperation(OperationCategory.WRITE); + + // TODO handle virtual directories + final List locations = getLocationsForPath(src, true); + RemoteMethod method = new RemoteMethod("createEncryptionZone", + new Class[] {String.class, String.class}, + new RemoteParam(), keyName); + rpcClient.invokeSequential(locations, method); } @Override // ClientProtocol public EncryptionZone getEZForPath(String src) throws IOException { - return clientProto.getEZForPath(src); + checkOperation(OperationCategory.READ); + + // TODO handle virtual directories + final List locations = getLocationsForPath(src, false); + RemoteMethod method = new RemoteMethod("getEZForPath", + new Class[] {String.class}, new RemoteParam()); + return (EncryptionZone) rpcClient.invokeSequential( + locations, method, EncryptionZone.class, null); } @Override // ClientProtocol public BatchedEntries listEncryptionZones(long prevId) throws IOException { - return clientProto.listEncryptionZones(prevId); + checkOperation(OperationCategory.READ, false); + return null; } @Override // ClientProtocol public void reencryptEncryptionZone(String zone, ReencryptAction action) throws IOException { - clientProto.reencryptEncryptionZone(zone, action); + checkOperation(OperationCategory.WRITE, false); } @Override // ClientProtocol public BatchedEntries listReencryptionStatus( long prevId) throws IOException { - return clientProto.listReencryptionStatus(prevId); + checkOperation(OperationCategory.READ, false); + return null; } @Override // ClientProtocol public void setXAttr(String src, XAttr xAttr, EnumSet flag) throws IOException { - clientProto.setXAttr(src, xAttr, flag); + checkOperation(OperationCategory.WRITE); + + // TODO handle virtual directories + final List locations = getLocationsForPath(src, true); + RemoteMethod method = new RemoteMethod("setXAttr", + new Class[] {String.class, XAttr.class, EnumSet.class}, + new RemoteParam(), xAttr, flag); + rpcClient.invokeSequential(locations, method); } + @SuppressWarnings("unchecked") @Override // ClientProtocol public List getXAttrs(String src, List xAttrs) throws IOException { - return clientProto.getXAttrs(src, xAttrs); + checkOperation(OperationCategory.READ); + + // TODO handle virtual directories + final List locations = getLocationsForPath(src, false); + RemoteMethod method = new RemoteMethod("getXAttrs", + new Class[] {String.class, List.class}, new RemoteParam(), xAttrs); + return (List) rpcClient.invokeSequential( + locations, method, List.class, null); } + @SuppressWarnings("unchecked") @Override // ClientProtocol public List listXAttrs(String src) throws IOException { - return clientProto.listXAttrs(src); + checkOperation(OperationCategory.READ); + + // TODO handle virtual directories + final List locations = getLocationsForPath(src, false); + RemoteMethod method = new RemoteMethod("listXAttrs", + new Class[] {String.class}, new RemoteParam()); + return (List) rpcClient.invokeSequential( + locations, method, List.class, null); } @Override // ClientProtocol public void removeXAttr(String src, XAttr xAttr) throws IOException { - clientProto.removeXAttr(src, xAttr); + checkOperation(OperationCategory.WRITE); + + // TODO handle virtual directories + final List locations = getLocationsForPath(src, true); + RemoteMethod method = new RemoteMethod("removeXAttr", + new Class[] {String.class, XAttr.class}, new RemoteParam(), xAttr); + rpcClient.invokeSequential(locations, method); } @Override // ClientProtocol public void checkAccess(String path, FsAction mode) throws IOException { - clientProto.checkAccess(path, mode); + checkOperation(OperationCategory.READ); + + // TODO handle virtual directories + final List locations = getLocationsForPath(path, true); + RemoteMethod method = new RemoteMethod("checkAccess", + new Class[] {String.class, FsAction.class}, + new RemoteParam(), mode); + rpcClient.invokeSequential(locations, method); } @Override // ClientProtocol public long getCurrentEditLogTxid() throws IOException { - return clientProto.getCurrentEditLogTxid(); + checkOperation(OperationCategory.READ); + + RemoteMethod method = new RemoteMethod( + "getCurrentEditLogTxid", new Class[] {}); + final Set nss = namenodeResolver.getNamespaces(); + Map ret = + rpcClient.invokeConcurrent(nss, method, true, false, long.class); + + // Return the maximum txid + long txid = 0; + for (long t : ret.values()) { + if (t > txid) { + txid = t; + } + } + return txid; } @Override // ClientProtocol public EventBatchList getEditsFromTxid(long txid) throws IOException { - return clientProto.getEditsFromTxid(txid); + checkOperation(OperationCategory.READ, false); + return null; } - @Override // ClientProtocol + @Override public DataEncryptionKey getDataEncryptionKey() throws IOException { - return clientProto.getDataEncryptionKey(); + checkOperation(OperationCategory.READ, false); + return null; } - @Override // ClientProtocol + @Override public String createSnapshot(String snapshotRoot, String snapshotName) throws IOException { - return clientProto.createSnapshot(snapshotRoot, snapshotName); + checkOperation(OperationCategory.WRITE); + return null; } - @Override // ClientProtocol + @Override public void deleteSnapshot(String snapshotRoot, String snapshotName) throws IOException { - clientProto.deleteSnapshot(snapshotRoot, snapshotName); + checkOperation(OperationCategory.WRITE, false); } @Override // ClientProtocol public void setQuota(String path, long namespaceQuota, long storagespaceQuota, StorageType type) throws IOException { - clientProto.setQuota(path, namespaceQuota, storagespaceQuota, type); + this.quotaCall.setQuota(path, namespaceQuota, storagespaceQuota, type); } @Override // ClientProtocol public QuotaUsage getQuotaUsage(String path) throws IOException { - return clientProto.getQuotaUsage(path); + return this.quotaCall.getQuotaUsage(path); } - @Override // ClientProtocol + @Override public void reportBadBlocks(LocatedBlock[] blocks) throws IOException { - clientProto.reportBadBlocks(blocks); + checkOperation(OperationCategory.WRITE); + + // Block pool id -> blocks + Map> blockLocations = new HashMap<>(); + for (LocatedBlock block : blocks) { + String bpId = block.getBlock().getBlockPoolId(); + List bpBlocks = blockLocations.get(bpId); + if (bpBlocks == null) { + bpBlocks = new LinkedList<>(); + blockLocations.put(bpId, bpBlocks); + } + bpBlocks.add(block); + } + + // Invoke each block pool + for (Entry> entry : blockLocations.entrySet()) { + String bpId = entry.getKey(); + List bpBlocks = entry.getValue(); + + LocatedBlock[] bpBlocksArray = + bpBlocks.toArray(new LocatedBlock[bpBlocks.size()]); + RemoteMethod method = new RemoteMethod("reportBadBlocks", + new Class[] {LocatedBlock[].class}, + new Object[] {bpBlocksArray}); + rpcClient.invokeSingleBlockPool(bpId, method); + } } - @Override // ClientProtocol + @Override public void unsetStoragePolicy(String src) throws IOException { - clientProto.unsetStoragePolicy(src); + checkOperation(OperationCategory.WRITE, false); } - @Override // ClientProtocol + @Override public BlockStoragePolicy getStoragePolicy(String path) throws IOException { - return clientProto.getStoragePolicy(path); + checkOperation(OperationCategory.READ, false); + return null; } @Override // ClientProtocol public ErasureCodingPolicyInfo[] getErasureCodingPolicies() throws IOException { - return clientProto.getErasureCodingPolicies(); + return erasureCoding.getErasureCodingPolicies(); } @Override // ClientProtocol public Map getErasureCodingCodecs() throws IOException { - return clientProto.getErasureCodingCodecs(); + return erasureCoding.getErasureCodingCodecs(); } @Override // ClientProtocol public AddErasureCodingPolicyResponse[] addErasureCodingPolicies( ErasureCodingPolicy[] policies) throws IOException { - return clientProto.addErasureCodingPolicies(policies); + return erasureCoding.addErasureCodingPolicies(policies); } @Override // ClientProtocol public void removeErasureCodingPolicy(String ecPolicyName) throws IOException { - clientProto.removeErasureCodingPolicy(ecPolicyName); + erasureCoding.removeErasureCodingPolicy(ecPolicyName); } @Override // ClientProtocol public void disableErasureCodingPolicy(String ecPolicyName) throws IOException { - clientProto.disableErasureCodingPolicy(ecPolicyName); + erasureCoding.disableErasureCodingPolicy(ecPolicyName); } @Override // ClientProtocol public void enableErasureCodingPolicy(String ecPolicyName) throws IOException { - clientProto.enableErasureCodingPolicy(ecPolicyName); + erasureCoding.enableErasureCodingPolicy(ecPolicyName); } @Override // ClientProtocol public ErasureCodingPolicy getErasureCodingPolicy(String src) throws IOException { - return clientProto.getErasureCodingPolicy(src); + return erasureCoding.getErasureCodingPolicy(src); } @Override // ClientProtocol public void setErasureCodingPolicy(String src, String ecPolicyName) throws IOException { - clientProto.setErasureCodingPolicy(src, ecPolicyName); + erasureCoding.setErasureCodingPolicy(src, ecPolicyName); } @Override // ClientProtocol public void unsetErasureCodingPolicy(String src) throws IOException { - clientProto.unsetErasureCodingPolicy(src); + erasureCoding.unsetErasureCodingPolicy(src); } - @Override // ClientProtocol + @Override public ECBlockGroupStats getECBlockGroupStats() throws IOException { - return clientProto.getECBlockGroupStats(); + return erasureCoding.getECBlockGroupStats(); } - @Override // ClientProtocol + @Override public ReplicatedBlockStats getReplicatedBlockStats() throws IOException { - return clientProto.getReplicatedBlockStats(); + checkOperation(OperationCategory.READ, false); + return null; } @Deprecated - @Override // ClientProtocol + @Override public BatchedEntries listOpenFiles(long prevId) throws IOException { - return clientProto.listOpenFiles(prevId); + return listOpenFiles(prevId, EnumSet.of(OpenFilesType.ALL_OPEN_FILES), + OpenFilesIterator.FILTER_PATH_DEFAULT); } - @Override // ClientProtocol + @Override public BatchedEntries listOpenFiles(long prevId, EnumSet openFilesTypes, String path) throws IOException { - return clientProto.listOpenFiles(prevId, openFilesTypes, path); - } - - @Override // ClientProtocol - public void satisfyStoragePolicy(String path) throws IOException { - clientProto.satisfyStoragePolicy(path); + checkOperation(OperationCategory.READ, false); + return null; } @Override // NamenodeProtocol @@ -1266,11 +2167,6 @@ public boolean isRollingUpgrade() throws IOException { return nnProto.isRollingUpgrade(); } - @Override // NamenodeProtocol - public Long getNextSPSPath() throws IOException { - return nnProto.getNextSPSPath(); - } - /** * Locate the location with the matching block pool id. * @@ -1280,7 +2176,7 @@ public Long getNextSPSPath() throws IOException { * @return Prioritized list of locations in the federated cluster. * @throws IOException if the location for this path cannot be determined. */ - protected RemoteLocation getLocationForPath( + private RemoteLocation getLocationForPath( String path, boolean failIfLocked, String blockPoolId) throws IOException { @@ -1379,6 +2275,27 @@ protected List getLocationsForPath(String path, } } + /** + * Check if a path should be in all subclusters. + * + * @param path Path to check. + * @return If a path should be in all subclusters. + */ + private boolean isPathAll(final String path) { + if (subclusterResolver instanceof MountTableResolver) { + try { + MountTableResolver mountTable = (MountTableResolver)subclusterResolver; + MountTable entry = mountTable.getMountPoint(path); + if (entry != null) { + return entry.isAll(); + } + } catch (IOException e) { + LOG.error("Cannot get mount point", e); + } + } + return false; + } + /** * Check if a path is in a read only mount point. * @@ -1400,6 +2317,121 @@ private boolean isPathReadOnly(final String path) { return false; } + /** + * Get the modification dates for mount points. + * + * @param path Name of the path to start checking dates from. + * @return Map with the modification dates for all sub-entries. + */ + private Map getMountPointDates(String path) { + Map ret = new TreeMap<>(); + if (subclusterResolver instanceof MountTableResolver) { + try { + final List children = subclusterResolver.getMountPoints(path); + for (String child : children) { + Long modTime = getModifiedTime(ret, path, child); + ret.put(child, modTime); + } + } catch (IOException e) { + LOG.error("Cannot get mount point", e); + } + } + return ret; + } + + /** + * Get modified time for child. If the child is present in mount table it + * will return the modified time. If the child is not present but subdirs of + * this child are present then it will return latest modified subdir's time + * as modified time of the requested child. + * @param ret contains children and modified times. + * @param mountTable. + * @param path Name of the path to start checking dates from. + * @param child child of the requested path. + * @return modified time. + */ + private long getModifiedTime(Map ret, String path, + String child) { + MountTableResolver mountTable = (MountTableResolver)subclusterResolver; + String srcPath; + if (path.equals(Path.SEPARATOR)) { + srcPath = Path.SEPARATOR + child; + } else { + srcPath = path + Path.SEPARATOR + child; + } + Long modTime = 0L; + try { + // Get mount table entry for the srcPath + MountTable entry = mountTable.getMountPoint(srcPath); + // if srcPath is not in mount table but its subdirs are in mount + // table we will display latest modified subdir date/time. + if (entry == null) { + List entries = mountTable.getMounts(srcPath); + for (MountTable eachEntry : entries) { + // Get the latest date + if (ret.get(child) == null || + ret.get(child) < eachEntry.getDateModified()) { + modTime = eachEntry.getDateModified(); + } + } + } else { + modTime = entry.getDateModified(); + } + } catch (IOException e) { + LOG.error("Cannot get mount point", e); + } + return modTime; + } + + /** + * Create a new file status for a mount point. + * + * @param name Name of the mount point. + * @param childrenNum Number of children. + * @param date Map with the dates. + * @return New HDFS file status representing a mount point. + */ + private HdfsFileStatus getMountPointStatus( + String name, int childrenNum, long date) { + long modTime = date; + long accessTime = date; + FsPermission permission = FsPermission.getDirDefault(); + String owner = this.superUser; + String group = this.superGroup; + try { + // TODO support users, it should be the user for the pointed folder + UserGroupInformation ugi = getRemoteUser(); + owner = ugi.getUserName(); + group = ugi.getPrimaryGroupName(); + } catch (IOException e) { + LOG.error("Cannot get the remote user: {}", e.getMessage()); + } + long inodeId = 0; + return new HdfsFileStatus.Builder() + .isdir(true) + .mtime(modTime) + .atime(accessTime) + .perm(permission) + .owner(owner) + .group(group) + .symlink(new byte[0]) + .path(DFSUtil.string2Bytes(name)) + .fileId(inodeId) + .children(childrenNum) + .build(); + } + + /** + * Get the name of the method that is calling this function. + * + * @return Name of the method calling this function. + */ + private static String getMethodName() { + final StackTraceElement[] stack = Thread.currentThread().getStackTrace(); + String methodName = stack[3].getMethodName(); + return methodName; + } + /** * Get the user that is invoking this operation. * @@ -1458,4 +2490,16 @@ public Quota getQuotaModule() { public FederationRPCMetrics getRPCMetrics() { return this.rpcMonitor.getRPCMetrics(); } + + @Override + public void satisfyStoragePolicy(String path) throws IOException { + checkOperation(OperationCategory.WRITE, false); + } + + @Override + public Long getNextSPSPath() throws IOException { + checkOperation(OperationCategory.READ, false); + // not supported + return null; + } }