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HDFS-7696. In FsDatasetImpl, the getBlockInputStream(..) and getTmpInputStreams(..) methods may leak file descriptors.

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This commit is contained in:
Tsz-Wo Nicholas Sze 2015-02-02 13:38:36 -08:00
parent df01337b80
commit d085eb15d7
3 changed files with 29 additions and 29 deletions
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3
hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt
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@ -821,6 +821,9 @@ Release 2.7.0 - UNRELEASED
HDFS-7423. various typos and message formatting fixes in nfs daemon and
doc. (Charles Lamb via yliu)
HDFS-7696. In FsDatasetImpl, the getBlockInputStream(..) and
getTmpInputStreams(..) methods may leak file descriptors. (szetszwo)
Release 2.6.1 - UNRELEASED
INCOMPATIBLE CHANGES

2
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/fsdataset/ReplicaInputStreams.java
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@ -18,8 +18,6 @@
package org.apache.hadoop.hdfs.server.datanode.fsdataset;
import java.io.Closeable;
import java.io.FileDescriptor;
import java.io.FileInputStream;
import java.io.InputStream;
import org.apache.hadoop.io.IOUtils;

51
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/fsdataset/impl/FsDatasetImpl.java
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@ -46,15 +46,13 @@
import javax.management.ObjectName;
import javax.management.StandardMBean;
import com.google.common.base.Preconditions;
import com.google.common.collect.Lists;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.apache.hadoop.classification.InterfaceAudience;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.fs.Path;
import org.apache.hadoop.hdfs.ExtendedBlockId;
import org.apache.hadoop.hdfs.DFSConfigKeys;
import org.apache.hadoop.hdfs.ExtendedBlockId;
import org.apache.hadoop.hdfs.StorageType;
import org.apache.hadoop.hdfs.protocol.Block;
import org.apache.hadoop.hdfs.protocol.BlockListAsLongs;
@ -67,7 +65,6 @@
import org.apache.hadoop.hdfs.server.common.HdfsServerConstants.ReplicaState;
import org.apache.hadoop.hdfs.server.common.Storage;
import org.apache.hadoop.hdfs.server.datanode.BlockMetadataHeader;
import org.apache.hadoop.hdfs.server.datanode.BlockScanner;
import org.apache.hadoop.hdfs.server.datanode.DataNode;
import org.apache.hadoop.hdfs.server.datanode.DataStorage;
import org.apache.hadoop.hdfs.server.datanode.DatanodeUtil;
@ -75,8 +72,8 @@
import org.apache.hadoop.hdfs.server.datanode.Replica;
import org.apache.hadoop.hdfs.server.datanode.ReplicaAlreadyExistsException;
import org.apache.hadoop.hdfs.server.datanode.ReplicaBeingWritten;
import org.apache.hadoop.hdfs.server.datanode.ReplicaInPipeline;
import org.apache.hadoop.hdfs.server.datanode.ReplicaHandler;
import org.apache.hadoop.hdfs.server.datanode.ReplicaInPipeline;
import org.apache.hadoop.hdfs.server.datanode.ReplicaInfo;
import org.apache.hadoop.hdfs.server.datanode.ReplicaNotFoundException;
import org.apache.hadoop.hdfs.server.datanode.ReplicaUnderRecovery;
@ -91,7 +88,7 @@
import org.apache.hadoop.hdfs.server.datanode.fsdataset.ReplicaOutputStreams;
import org.apache.hadoop.hdfs.server.datanode.fsdataset.RoundRobinVolumeChoosingPolicy;
import org.apache.hadoop.hdfs.server.datanode.fsdataset.VolumeChoosingPolicy;
import static org.apache.hadoop.hdfs.server.datanode.fsdataset.impl.RamDiskReplicaTracker.RamDiskReplica;
import org.apache.hadoop.hdfs.server.datanode.fsdataset.impl.RamDiskReplicaTracker.RamDiskReplica;
import org.apache.hadoop.hdfs.server.datanode.metrics.FSDatasetMBean;
import org.apache.hadoop.hdfs.server.protocol.BlockRecoveryCommand.RecoveringBlock;
import org.apache.hadoop.hdfs.server.protocol.DatanodeStorage;
@ -109,6 +106,9 @@
import org.apache.hadoop.util.ReflectionUtils;
import org.apache.hadoop.util.Time;
import com.google.common.base.Preconditions;
import com.google.common.collect.Lists;
/**************************************************
* FSDataset manages a set of data blocks. Each block
* has a unique name and an extent on disk.
@ -571,18 +571,12 @@ public InputStream getBlockInputStream(ExtendedBlock b,
if (isNativeIOAvailable) {
return NativeIO.getShareDeleteFileInputStream(blockFile, seekOffset);
} else {
RandomAccessFile blockInFile;
try {
blockInFile = new RandomAccessFile(blockFile, "r");
return openAndSeek(blockFile, seekOffset);
} catch (FileNotFoundException fnfe) {
throw new IOException("Block " + b + " is not valid. " +
"Expected block file at " + blockFile + " does not exist.");
}
if (seekOffset > 0) {
blockInFile.seek(seekOffset);
}
return new FileInputStream(blockInFile.getFD());
}
}
@ -628,23 +622,13 @@ private ReplicaInfo getReplicaInfo(String bpid, long blkid)
*/
@Override // FsDatasetSpi
public synchronized ReplicaInputStreams getTmpInputStreams(ExtendedBlock b,
long blkOffset, long ckoff) throws IOException {
long blkOffset, long metaOffset) throws IOException {
ReplicaInfo info = getReplicaInfo(b);
FsVolumeReference ref = info.getVolume().obtainReference();
try {
File blockFile = info.getBlockFile();
RandomAccessFile blockInFile = new RandomAccessFile(blockFile, "r");
if (blkOffset > 0) {
blockInFile.seek(blkOffset);
}
File metaFile = info.getMetaFile();
RandomAccessFile metaInFile = new RandomAccessFile(metaFile, "r");
if (ckoff > 0) {
metaInFile.seek(ckoff);
}
InputStream blockInStream = new FileInputStream(blockInFile.getFD());
InputStream blockInStream = openAndSeek(info.getBlockFile(), blkOffset);
try {
InputStream metaInStream = new FileInputStream(metaInFile.getFD());
InputStream metaInStream = openAndSeek(info.getMetaFile(), metaOffset);
return new ReplicaInputStreams(blockInStream, metaInStream, ref);
} catch (IOException e) {
IOUtils.cleanup(null, blockInStream);
@ -656,6 +640,21 @@ public synchronized ReplicaInputStreams getTmpInputStreams(ExtendedBlock b,
}
}
private static FileInputStream openAndSeek(File file, long offset)
throws IOException {
RandomAccessFile raf = null;
try {
raf = new RandomAccessFile(file, "r");
if (offset > 0) {
raf.seek(offset);
}
return new FileInputStream(raf.getFD());
} catch(IOException ioe) {
IOUtils.cleanup(null, raf);
throw ioe;
}
}
static File moveBlockFiles(Block b, File srcfile, File destdir)
throws IOException {
final File dstfile = new File(destdir, b.getBlockName());