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HDFS-8328. Follow-on to update decode for DataNode striped blocks reconstruction. (yliu)

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This commit is contained in:
yliu 2015-06-04 14:41:38 +08:00
parent 673280df24
commit a31eada33a
4 changed files with 308 additions and 189 deletions
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3
hadoop-hdfs-project/hadoop-hdfs/CHANGES-HDFS-EC-7285.txt
View File

@ -280,3 +280,6 @@
HDFS-7621. Erasure Coding: update the Balancer/Mover data migration logic.
(Walter Su via zhz)
HDFS-8328. Follow-on to update decode for DataNode striped blocks
reconstruction. (yliu)

2
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/DFSConfigKeys.java
View File

@ -373,7 +373,7 @@ public class DFSConfigKeys extends CommonConfigurationKeys {
public static final String DFS_DATANODE_STRIPED_READ_THREADS_KEY = "dfs.datanode.stripedread.threads";
public static final int DFS_DATANODE_STRIPED_READ_THREADS_DEFAULT = 20;
public static final String DFS_DATANODE_STRIPED_READ_BUFFER_SIZE_KEY = "dfs.datanode.stripedread.buffer.size";
public static final int DFS_DATANODE_STRIPED_READ_BUFFER_SIZE_DEFAULT = 256 * 1024;
public static final int DFS_DATANODE_STRIPED_READ_BUFFER_SIZE_DEFAULT = 64 * 1024;
public static final String DFS_DATANODE_STRIPED_READ_THRESHOLD_MILLIS_KEY = "dfs.datanode.stripedread.threshold.millis";
public static final int DFS_DATANODE_STRIPED_READ_THRESHOLD_MILLIS_DEFAULT = 5000; //5s
public static final String DFS_DATANODE_DNS_INTERFACE_KEY = "dfs.datanode.dns.interface";

423
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/erasurecode/ErasureCodingWorker.java
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@ -70,9 +70,7 @@
import org.apache.hadoop.io.IOUtils;
import org.apache.hadoop.io.erasurecode.ECSchema;
import org.apache.hadoop.io.erasurecode.rawcoder.RSRawDecoder;
import org.apache.hadoop.io.erasurecode.rawcoder.RSRawEncoder;
import org.apache.hadoop.io.erasurecode.rawcoder.RawErasureDecoder;
import org.apache.hadoop.io.erasurecode.rawcoder.RawErasureEncoder;
import org.apache.hadoop.net.NetUtils;
import org.apache.hadoop.security.token.Token;
import org.apache.hadoop.util.Daemon;
@ -80,6 +78,8 @@
import com.google.common.base.Preconditions;
import static org.apache.hadoop.hdfs.util.StripedBlockUtil.convertIndex4Decode;
/**
* ErasureCodingWorker handles the erasure coding recovery work commands. These
* commands would be issued from Namenode as part of Datanode's heart beat
@ -111,10 +111,6 @@ public ErasureCodingWorker(Configuration conf, DataNode datanode) {
DFSConfigKeys.DFS_DATANODE_STRIPED_READ_BUFFER_SIZE_DEFAULT);
}
private RawErasureEncoder newEncoder(int numDataUnits, int numParityUnits) {
return new RSRawEncoder(numDataUnits, numParityUnits);
}
private RawErasureDecoder newDecoder(int numDataUnits, int numParityUnits) {
return new RSRawDecoder(numDataUnits, numParityUnits);
}
@ -221,14 +217,14 @@ private class ReconstructAndTransferBlock implements Runnable {
private final int parityBlkNum;
private final int cellSize;
private RawErasureEncoder encoder;
private RawErasureDecoder decoder;
// Striped read buffer size
private int bufferSize;
private final ExtendedBlock blockGroup;
// position in striped block
private final int minRequiredSources;
// position in striped internal block
private long positionInBlock;
// sources
@ -237,6 +233,10 @@ private class ReconstructAndTransferBlock implements Runnable {
private final List<StripedReader> stripedReaders;
// The buffers and indices for striped blocks whose length is 0
private ByteBuffer[] zeroStripeBuffers;
private short[] zeroStripeIndices;
// targets
private final DatanodeInfo[] targets;
private final StorageType[] targetStorageTypes;
@ -272,21 +272,32 @@ private class ReconstructAndTransferBlock implements Runnable {
cellSize = recoveryInfo.getCellSize();
blockGroup = recoveryInfo.getExtendedBlock();
final int cellsNum = (int)((blockGroup.getNumBytes() - 1) / cellSize + 1);
minRequiredSources = Math.min(cellsNum, dataBlkNum);
liveIndices = recoveryInfo.getLiveBlockIndices();
sources = recoveryInfo.getSourceDnInfos();
stripedReaders = new ArrayList<>(sources.length);
Preconditions.checkArgument(liveIndices.length >= dataBlkNum,
Preconditions.checkArgument(liveIndices.length >= minRequiredSources,
"No enough live striped blocks.");
Preconditions.checkArgument(liveIndices.length == sources.length,
"liveBlockIndices and source dns should match");
if (minRequiredSources < dataBlkNum) {
zeroStripeBuffers =
new ByteBuffer[dataBlkNum - minRequiredSources];
zeroStripeIndices = new short[dataBlkNum - minRequiredSources];
}
targets = recoveryInfo.getTargetDnInfos();
targetStorageTypes = recoveryInfo.getTargetStorageTypes();
targetIndices = new short[targets.length];
targetBuffers = new ByteBuffer[targets.length];
Preconditions.checkArgument(targetIndices.length <= parityBlkNum,
"Too much missed striped blocks.");
targetSockets = new Socket[targets.length];
targetOutputStreams = new DataOutputStream[targets.length];
targetInputStreams = new DataInputStream[targets.length];
@ -303,6 +314,10 @@ private class ReconstructAndTransferBlock implements Runnable {
cachingStrategy = CachingStrategy.newDefaultStrategy();
}
private ByteBuffer allocateBuffer(int length) {
return ByteBuffer.allocate(length);
}
private ExtendedBlock getBlock(ExtendedBlock blockGroup, int i) {
return StripedBlockUtil.constructInternalBlock(blockGroup, cellSize,
dataBlkNum, i);
@ -313,37 +328,67 @@ private long getBlockLen(ExtendedBlock blockGroup, int i) {
cellSize, dataBlkNum, i);
}
/**
* StripedReader is used to read from one source DN, it contains a block
* reader, buffer and striped block index.
* Only allocate StripedReader once for one source, and the StripedReader
* has the same array order with sources. Typically we only need to allocate
* minimum number (minRequiredSources) of StripedReader, and allocate
* new for new source DN if some existing DN invalid or slow.
* If some source DN is corrupt, set the corresponding blockReader to
* null and will never read from it again.
*
* @param i the array index of sources
* @param offsetInBlock offset for the internal block
* @return StripedReader
*/
private StripedReader addStripedReader(int i, long offsetInBlock) {
StripedReader reader = new StripedReader(liveIndices[i]);
stripedReaders.add(reader);
BlockReader blockReader = newBlockReader(
getBlock(blockGroup, liveIndices[i]), offsetInBlock, sources[i]);
if (blockReader != null) {
initChecksumAndBufferSizeIfNeeded(blockReader);
reader.blockReader = blockReader;
}
reader.buffer = allocateBuffer(bufferSize);
return reader;
}
@Override
public void run() {
datanode.incrementXmitsInProgress();
try {
// Store the indices of successfully read source
// This will be updated after doing real read.
int[] success = new int[dataBlkNum];
// Store the array indices of source DNs we have read successfully.
// In each iteration of read, the success list may be updated if
// some source DN is corrupted or slow. And use the updated success
// list of DNs for next iteration read.
int[] success = new int[minRequiredSources];
int nsuccess = 0;
for (int i = 0; i < sources.length && nsuccess < dataBlkNum; i++) {
StripedReader reader = new StripedReader(liveIndices[i]);
stripedReaders.add(reader);
BlockReader blockReader = newBlockReader(
getBlock(blockGroup, liveIndices[i]), 0, sources[i]);
if (blockReader != null) {
initChecksumAndBufferSizeIfNeeded(blockReader);
reader.blockReader = blockReader;
reader.buffer = ByteBuffer.allocate(bufferSize);
for (int i = 0;
i < sources.length && nsuccess < minRequiredSources; i++) {
StripedReader reader = addStripedReader(i, 0);
if (reader.blockReader != null) {
success[nsuccess++] = i;
}
}
if (nsuccess < dataBlkNum) {
if (nsuccess < minRequiredSources) {
String error = "Can't find minimum sources required by "
+ "recovery, block id: " + blockGroup.getBlockId();
throw new IOException(error);
}
if (zeroStripeBuffers != null) {
for (int i = 0; i < zeroStripeBuffers.length; i++) {
zeroStripeBuffers[i] = allocateBuffer(bufferSize);
}
}
for (int i = 0; i < targets.length; i++) {
targetBuffers[i] = ByteBuffer.allocate(bufferSize);
targetBuffers[i] = allocateBuffer(bufferSize);
}
checksumSize = checksum.getChecksumSize();
@ -356,7 +401,9 @@ public void run() {
packetBuf = new byte[maxPacketSize];
checksumBuf = new byte[checksumSize * (bufferSize / bytesPerChecksum)];
// Store whether the target is success
// targetsStatus store whether some target is success, it will record
// any failed target once, if some target failed (invalid DN or transfer
// failed), will not transfer data to it any more.
boolean[] targetsStatus = new boolean[targets.length];
if (initTargetStreams(targetsStatus) == 0) {
String error = "All targets are failed.";
@ -367,16 +414,11 @@ public void run() {
while (positionInBlock < firstStripedBlockLength) {
int toRead = Math.min(
bufferSize, (int)(firstStripedBlockLength - positionInBlock));
// step1: read minimum striped buffer size data required by recovery.
nsuccess = readMinimumStripedData4Recovery(success);
// step1: read from minimum source DNs required for reconstruction.
// The returned success list is the source DNs we do real read from
success = readMinimumStripedData4Recovery(success);
if (nsuccess < dataBlkNum) {
String error = "Can't read data from minimum number of sources "
+ "required by recovery, block id: " + blockGroup.getBlockId();
throw new IOException(error);
}
// step2: encode/decode to recover targets
// step2: decode to reconstruct targets
long remaining = firstStripedBlockLength - positionInBlock;
int toRecoverLen = remaining < bufferSize ?
(int)remaining : bufferSize;
@ -426,65 +468,97 @@ private void initChecksumAndBufferSizeIfNeeded(BlockReader blockReader) {
}
}
// assume liveIndices is not ordered.
private void getTargetIndices() {
BitSet bitset = new BitSet(dataBlkNum + parityBlkNum);
for (int i = 0; i < sources.length; i++) {
bitset.set(liveIndices[i]);
}
int m = 0;
for (int i = 0; i < dataBlkNum + parityBlkNum && m < targets.length; i++) {
int k = 0;
for (int i = 0; i < dataBlkNum + parityBlkNum; i++) {
if (!bitset.get(i)) {
targetIndices[m++] = (short)i;
if (getBlockLen(blockGroup, i) > 0) {
if (m < targets.length) {
targetIndices[m++] = (short)i;
}
} else {
zeroStripeIndices[k++] = (short)i;
}
}
}
}
/**
* Read minimum striped buffer size data required by recovery.
* <code>success</code> list will be updated after read.
*
* Initially we only read from <code>dataBlkNum</code> sources,
* if timeout or failure for some source, we will try to schedule
* read from a new source.
*/
private int readMinimumStripedData4Recovery(int[] success) {
private long getReadLength(int index) {
long blockLen = getBlockLen(blockGroup, index);
long remaining = blockLen - positionInBlock;
return remaining > bufferSize ? bufferSize : remaining;
}
/**
* Read from minimum source DNs required for reconstruction in the iteration.
* First try the success list which we think they are the best DNs
* If source DN is corrupt or slow, try to read some other source DN,
* and will update the success list.
*
* Remember the updated success list and return it for following
* operations and next iteration read.
*
* @param success the initial success list of source DNs we think best
* @return updated success list of source DNs we do real read
* @throws IOException
*/
private int[] readMinimumStripedData4Recovery(final int[] success)
throws IOException {
int nsuccess = 0;
int[] newSuccess = new int[minRequiredSources];
BitSet used = new BitSet(sources.length);
for (int i = 0; i < dataBlkNum; i++) {
/*
* Read from minimum source DNs required, the success list contains
* source DNs which we think best.
*/
for (int i = 0; i < minRequiredSources; i++) {
StripedReader reader = stripedReaders.get(success[i]);
Callable<Void> readCallable = readFromBlock(
reader.blockReader, reader.buffer);
Future<Void> f = readService.submit(readCallable);
futures.put(f, success[i]);
if (getReadLength(liveIndices[success[i]]) > 0) {
Callable<Void> readCallable = readFromBlock(
reader.blockReader, reader.buffer);
Future<Void> f = readService.submit(readCallable);
futures.put(f, success[i]);
} else {
// If the read length is 0, we don't need to do real read
reader.buffer.position(0);
newSuccess[nsuccess++] = success[i];
}
used.set(success[i]);
}
int nsuccess = 0;
while (!futures.isEmpty()) {
try {
StripingChunkReadResult result =
StripedBlockUtil.getNextCompletedStripedRead(
readService, futures, STRIPED_READ_THRESHOLD_MILLIS);
int resultIndex = -1;
if (result.state == StripingChunkReadResult.SUCCESSFUL) {
success[nsuccess++] = result.index;
if (nsuccess >= dataBlkNum) {
resultIndex = result.index;
} else if (result.state == StripingChunkReadResult.FAILED) {
// If read failed for some source DN, we should not use it anymore
// and schedule read from another source DN.
StripedReader failedReader = stripedReaders.get(result.index);
closeBlockReader(failedReader.blockReader);
failedReader.blockReader = null;
resultIndex = scheduleNewRead(used);
} else if (result.state == StripingChunkReadResult.TIMEOUT) {
// If timeout, we also schedule a new read.
resultIndex = scheduleNewRead(used);
}
if (resultIndex >= 0) {
newSuccess[nsuccess++] = resultIndex;
if (nsuccess >= minRequiredSources) {
// cancel remaining reads if we read successfully from minimum
// number of sources required for recovery.
// number of source DNs required by reconstruction.
cancelReads(futures.keySet());
futures.clear();
break;
}
} else if (result.state == StripingChunkReadResult.FAILED) {
// If read failed for some source, we should not use it anymore
// and schedule read from a new source.
StripedReader failedReader = stripedReaders.get(result.index);
closeBlockReader(failedReader.blockReader);
failedReader.blockReader = null;
scheduleNewRead(used);
} else if (result.state == StripingChunkReadResult.TIMEOUT) {
// If timeout, we also schedule a new read.
scheduleNewRead(used);
}
} catch (InterruptedException e) {
LOG.info("Read data interrupted.", e);
@ -492,19 +566,13 @@ private int readMinimumStripedData4Recovery(int[] success) {
}
}
return nsuccess;
}
/**
* Return true if need to do encoding to recovery missed striped block.
*/
private boolean shouldEncode(int[] success) {
for (int i = 0; i < success.length; i++) {
if (stripedReaders.get(success[i]).index >= dataBlkNum) {
return false;
}
if (nsuccess < minRequiredSources) {
String error = "Can't read data from minimum number of sources "
+ "required by reconstruction, block id: " + blockGroup.getBlockId();
throw new IOException(error);
}
return true;
return newSuccess;
}
private void paddingBufferToLen(ByteBuffer buffer, int len) {
@ -514,13 +582,6 @@ private void paddingBufferToLen(ByteBuffer buffer, int len) {
}
}
// Initialize encoder
private void initEncoderIfNecessary() {
if (encoder == null) {
encoder = newEncoder(dataBlkNum, parityBlkNum);
}
}
// Initialize decoder
private void initDecoderIfNecessary() {
if (decoder == null) {
@ -528,119 +589,119 @@ private void initDecoderIfNecessary() {
}
}
private int[] getErasedIndices(boolean[] targetsStatus) {
int[] result = new int[targets.length];
int m = 0;
for (int i = 0; i < targets.length; i++) {
if (targetsStatus[i]) {
result[m++] = convertIndex4Decode(targetIndices[i],
dataBlkNum, parityBlkNum);
}
}
return Arrays.copyOf(result, m);
}
private void recoverTargets(int[] success, boolean[] targetsStatus,
int toRecoverLen) {
if (shouldEncode(success)) {
initEncoderIfNecessary();
ByteBuffer[] dataBuffers = new ByteBuffer[dataBlkNum];
ByteBuffer[] parityBuffers = new ByteBuffer[parityBlkNum];
for (int i = 0; i < dataBlkNum; i++) {
StripedReader reader = stripedReaders.get(i);
ByteBuffer buffer = reader.buffer;
initDecoderIfNecessary();
ByteBuffer[] inputs = new ByteBuffer[dataBlkNum + parityBlkNum];
for (int i = 0; i < success.length; i++) {
StripedReader reader = stripedReaders.get(success[i]);
ByteBuffer buffer = reader.buffer;
paddingBufferToLen(buffer, toRecoverLen);
inputs[convertIndex4Decode(reader.index, dataBlkNum, parityBlkNum)] =
(ByteBuffer)buffer.flip();
}
if (success.length < dataBlkNum) {
for (int i = 0; i < zeroStripeBuffers.length; i++) {
ByteBuffer buffer = zeroStripeBuffers[i];
paddingBufferToLen(buffer, toRecoverLen);
dataBuffers[i] = (ByteBuffer)buffer.flip();
}
for (int i = dataBlkNum; i < stripedReaders.size(); i++) {
StripedReader reader = stripedReaders.get(i);
parityBuffers[reader.index - dataBlkNum] = cleanBuffer(reader.buffer);
}
for (int i = 0; i < targets.length; i++) {
parityBuffers[targetIndices[i] - dataBlkNum] = targetBuffers[i];
}
for (int i = 0; i < parityBlkNum; i++) {
if (parityBuffers[i] == null) {
parityBuffers[i] = ByteBuffer.allocate(toRecoverLen);
} else {
parityBuffers[i].limit(toRecoverLen);
}
}
encoder.encode(dataBuffers, parityBuffers);
} else {
/////////// TODO: wait for HADOOP-11847 /////////////
////////// The current decode method always try to decode parityBlkNum number of data blocks. ////////////
initDecoderIfNecessary();
ByteBuffer[] inputs = new ByteBuffer[dataBlkNum + parityBlkNum];
for (int i = 0; i < success.length; i++) {
StripedReader reader = stripedReaders.get(success[i]);
ByteBuffer buffer = reader.buffer;
paddingBufferToLen(buffer, toRecoverLen);
int index = reader.index < dataBlkNum ?
reader.index + parityBlkNum : reader.index - dataBlkNum;
int index = convertIndex4Decode(zeroStripeIndices[i], dataBlkNum,
parityBlkNum);
inputs[index] = (ByteBuffer)buffer.flip();
}
int[] indices4Decode = new int[parityBlkNum];
int m = 0;
for (int i = 0; i < dataBlkNum + parityBlkNum; i++) {
if (inputs[i] == null) {
inputs[i] = ByteBuffer.allocate(toRecoverLen);
indices4Decode[m++] = i;
}
}
ByteBuffer[] outputs = new ByteBuffer[parityBlkNum];
m = 0;
// targetIndices is subset of indices4Decode
for (int i = 0; i < parityBlkNum; i++) {
if (m < targetIndices.length &&
(indices4Decode[i] - parityBlkNum) == targetIndices[m]) {
outputs[i] = targetBuffers[m++];
outputs[i].limit(toRecoverLen);
} else {
outputs[i] = ByteBuffer.allocate(toRecoverLen);
}
}
int[] erasedIndices = getErasedIndices(targetsStatus);
ByteBuffer[] outputs = new ByteBuffer[erasedIndices.length];
int m = 0;
for (int i = 0; i < targetBuffers.length; i++) {
if (targetsStatus[i]) {
outputs[m++] = targetBuffers[i];
outputs[i].limit(toRecoverLen);
}
}
decoder.decode(inputs, erasedIndices, outputs);
decoder.decode(inputs, indices4Decode, outputs);
for (int i = 0; i < targets.length; i++) {
if (targetsStatus[i]) {
long blockLen = getBlockLen(blockGroup, targetIndices[i]);
long remaining = blockLen - positionInBlock;
if (remaining < 0) {
targetBuffers[i].limit(0);
} else if (remaining < toRecoverLen) {
targetBuffers[i].limit((int)remaining);
}
for (int i = 0; i < targets.length; i++) {
if (targetsStatus[i]) {
long blockLen = getBlockLen(blockGroup, targetIndices[i]);
long remaining = blockLen - positionInBlock;
if (remaining < 0) {
targetBuffers[i].limit(0);
} else if (remaining < toRecoverLen) {
targetBuffers[i].limit((int)remaining);
}
}
}
}
/**
* Schedule read from a new source, we first try un-initial source,
* then try un-used source in this round and bypass failed source.
* Schedule a read from some new source DN if some DN is corrupted
* or slow, this is called from the read iteration.
* Initially we may only have <code>minRequiredSources</code> number of
* StripedReader.
* If the position is at the end of target block, don't need to do
* real read, and return the array index of source DN, otherwise -1.
*
* @param used the used source DNs in this iteration.
* @return the array index of source DN if don't need to do real read.
*/
private void scheduleNewRead(BitSet used) {
private int scheduleNewRead(BitSet used) {
StripedReader reader = null;
// step1: initially we may only have <code>minRequiredSources</code>
// number of StripedReader, and there may be some source DNs we never
// read before, so will try to create StripedReader for one new source DN
// and try to read from it. If found, go to step 3.
int m = stripedReaders.size();
while (m < sources.length && reader == null) {
reader = new StripedReader(liveIndices[m]);
BlockReader blockReader = newBlockReader(
getBlock(blockGroup, liveIndices[m]), positionInBlock, sources[m]);
stripedReaders.add(reader);
if (blockReader != null) {
assert blockReader.getDataChecksum().equals(checksum);
reader.blockReader = blockReader;
reader.buffer = ByteBuffer.allocate(bufferSize);
while (reader == null && m < sources.length) {
reader = addStripedReader(m, positionInBlock);
if (getReadLength(liveIndices[m]) > 0) {
if (reader.blockReader == null) {
reader = null;
m++;
}
} else {
m++;
reader = null;
used.set(m);
return m;
}
}
// step2: if there is no new source DN we can use, try to find a source
// DN we ever read from but because some reason, e.g., slow, it
// is not in the success DN list at the begin of this iteration, so
// we have not tried it in this iteration. Now we have a chance to
// revisit it again.
for (int i = 0; reader == null && i < stripedReaders.size(); i++) {
StripedReader r = stripedReaders.get(i);
if (r.blockReader != null && !used.get(i)) {
closeBlockReader(r.blockReader);
r.blockReader = newBlockReader(
getBlock(blockGroup, liveIndices[i]), positionInBlock,
sources[i]);
if (r.blockReader != null) {
m = i;
reader = r;
if (!used.get(i)) {
StripedReader r = stripedReaders.get(i);
if (getReadLength(liveIndices[i]) > 0) {
closeBlockReader(r.blockReader);
r.blockReader = newBlockReader(
getBlock(blockGroup, liveIndices[i]), positionInBlock,
sources[i]);
if (r.blockReader != null) {
m = i;
reader = r;
}
} else {
used.set(i);
r.buffer.position(0);
return i;
}
}
}
// step3: schedule if find a correct source DN and need to do real read.
if (reader != null) {
Callable<Void> readCallable = readFromBlock(
reader.blockReader, reader.buffer);
@ -648,6 +709,8 @@ private void scheduleNewRead(BitSet used) {
futures.put(f, m);
used.set(m);
}
return -1;
}
// cancel all reads.
@ -708,7 +771,10 @@ private InetSocketAddress getSocketAddress4Transfer(DatanodeInfo dnInfo) {
}
private BlockReader newBlockReader(final ExtendedBlock block,
long startOffset, DatanodeInfo dnInfo) {
long offsetInBlock, DatanodeInfo dnInfo) {
if (offsetInBlock >= block.getNumBytes()) {
return null;
}
try {
InetSocketAddress dnAddr = getSocketAddress4Transfer(dnInfo);
Token<BlockTokenIdentifier> blockToken = datanode.getBlockAccessToken(
@ -720,7 +786,8 @@ private BlockReader newBlockReader(final ExtendedBlock block,
* requires config for domain-socket in UNIX or legacy config in Windows.
*/
return RemoteBlockReader2.newBlockReader(
"dummy", block, blockToken, startOffset, block.getNumBytes(), true,
"dummy", block, blockToken, offsetInBlock,
block.getNumBytes() - offsetInBlock, true,
"", newConnectedPeer(block, dnAddr, blockToken, dnInfo), dnInfo,
null, cachingStrategy);
} catch (IOException e) {
@ -808,6 +875,12 @@ private void clearBuffers() {
}
}
if (zeroStripeBuffers != null) {
for (int i = 0; i < zeroStripeBuffers.length; i++) {
zeroStripeBuffers[i].clear();
}
}
for (int i = 0; i < targetBuffers.length; i++) {
if (targetBuffers[i] != null) {
cleanBuffer(targetBuffers[i]);
@ -903,7 +976,7 @@ private int initTargetStreams(boolean[] targetsStatus) {
}
private static class StripedReader {
private final short index;
private final short index; // internal block index
private BlockReader blockReader;
private ByteBuffer buffer;

65
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/TestRecoverStripedFile.java
View File

@ -100,29 +100,69 @@ public void testRecoverOneParityBlock() throws Exception {
}
@Test(timeout = 120000)
public void testRecoverThreeParityBlocks() throws Exception {
public void testRecoverOneParityBlock1() throws Exception {
int fileLen = cellSize + cellSize/10;
assertFileBlocksRecovery("/testRecoverOneParityBlock1", fileLen, 0, 1);
}
@Test(timeout = 120000)
public void testRecoverOneParityBlock2() throws Exception {
int fileLen = 1;
assertFileBlocksRecovery("/testRecoverOneParityBlock2", fileLen, 0, 1);
}
@Test(timeout = 120000)
public void testRecoverOneParityBlock3() throws Exception {
int fileLen = 3 * blockSize + blockSize/10;
assertFileBlocksRecovery("/testRecoverOneParityBlock3", fileLen, 0, 1);
}
@Test(timeout = 120000)
public void testRecoverThreeParityBlocks() throws Exception {
int fileLen = 10 * blockSize + blockSize/10;
assertFileBlocksRecovery("/testRecoverThreeParityBlocks", fileLen, 0, 3);
}
@Test(timeout = 120000)
public void testRecoverThreeDataBlocks() throws Exception {
int fileLen = 3 * blockSize + blockSize/10;
int fileLen = 10 * blockSize + blockSize/10;
assertFileBlocksRecovery("/testRecoverThreeDataBlocks", fileLen, 1, 3);
}
@Test(timeout = 120000)
public void testRecoverThreeDataBlocks1() throws Exception {
int fileLen = 3 * blockSize + blockSize/10;
assertFileBlocksRecovery("/testRecoverThreeDataBlocks1", fileLen, 1, 3);
}
@Test(timeout = 120000)
public void testRecoverOneDataBlock() throws Exception {
////TODO: TODO: wait for HADOOP-11847
//int fileLen = 10 * blockSize + blockSize/10;
//assertFileBlocksRecovery("/testRecoverOneDataBlock", fileLen, 1, 1);
int fileLen = 10 * blockSize + blockSize/10;
assertFileBlocksRecovery("/testRecoverOneDataBlock", fileLen, 1, 1);
}
@Test(timeout = 120000)
public void testRecoverOneDataBlock1() throws Exception {
int fileLen = cellSize + cellSize/10;
assertFileBlocksRecovery("/testRecoverOneDataBlock1", fileLen, 1, 1);
}
@Test(timeout = 120000)
public void testRecoverOneDataBlock2() throws Exception {
int fileLen = 1;
assertFileBlocksRecovery("/testRecoverOneDataBlock2", fileLen, 1, 1);
}
@Test(timeout = 120000)
public void testRecoverAnyBlocks() throws Exception {
////TODO: TODO: wait for HADOOP-11847
//int fileLen = 3 * blockSize + blockSize/10;
//assertFileBlocksRecovery("/testRecoverAnyBlocks", fileLen, 2, 2);
int fileLen = 3 * blockSize + blockSize/10;
assertFileBlocksRecovery("/testRecoverAnyBlocks", fileLen, 2, 2);
}
@Test(timeout = 120000)
public void testRecoverAnyBlocks1() throws Exception {
int fileLen = 10 * blockSize + blockSize/10;
assertFileBlocksRecovery("/testRecoverAnyBlocks1", fileLen, 2, 3);
}
/**
@ -203,6 +243,9 @@ private void assertFileBlocksRecovery(String fileName, int fileLen,
replicaContents[i] = readReplica(replicas[i]);
}
int cellsNum = (fileLen - 1) / cellSize + 1;
int groupSize = Math.min(cellsNum, dataBlkNum) + parityBlkNum;
try {
DatanodeID[] dnIDs = new DatanodeID[toRecoverBlockNum];
for (int i = 0; i < toRecoverBlockNum; i++) {
@ -217,7 +260,6 @@ private void assertFileBlocksRecovery(String fileName, int fileLen,
}
setDataNodesDead(dnIDs);
// Check the locatedBlocks of the file again
locatedBlocks = getLocatedBlocks(file);
lastBlock = (LocatedStripedBlock)locatedBlocks.getLastLocatedBlock();
@ -232,7 +274,7 @@ private void assertFileBlocksRecovery(String fileName, int fileLen,
}
}
waitForRecoveryFinished(file);
waitForRecoveryFinished(file, groupSize);
targetDNs = sortTargetsByReplicas(blocks, targetDNs);
@ -319,7 +361,8 @@ private byte[] readReplica(File replica) throws IOException {
}
}
private LocatedBlocks waitForRecoveryFinished(Path file) throws Exception {
private LocatedBlocks waitForRecoveryFinished(Path file, int groupSize)
throws Exception {
final int ATTEMPTS = 60;
for (int i = 0; i < ATTEMPTS; i++) {
LocatedBlocks locatedBlocks = getLocatedBlocks(file);