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HDFS-12093. [READ] Share remoteFS between ProvidedReplica instances.

This commit is contained in:
Virajith Jalaparti 2017-08-07 14:31:15 -07:00 committed by Chris Douglas
parent 663b3c08b1
commit 2407c9b93a
5 changed files with 40 additions and 21 deletions
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6
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/FinalizedProvidedReplica.java
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@ -20,6 +20,7 @@ package org.apache.hadoop.hdfs.server.datanode;
import java.net.URI;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.fs.FileSystem;
import org.apache.hadoop.hdfs.server.common.HdfsServerConstants.ReplicaState;
import org.apache.hadoop.hdfs.server.datanode.fsdataset.FsVolumeSpi;
import org.apache.hadoop.hdfs.server.protocol.ReplicaRecoveryInfo;
@ -31,8 +32,9 @@ public class FinalizedProvidedReplica extends ProvidedReplica {
public FinalizedProvidedReplica(long blockId, URI fileURI,
long fileOffset, long blockLen, long genStamp,
FsVolumeSpi volume, Configuration conf) {
super(blockId, fileURI, fileOffset, blockLen, genStamp, volume, conf);
FsVolumeSpi volume, Configuration conf, FileSystem remoteFS) {
super(blockId, fileURI, fileOffset, blockLen, genStamp, volume, conf,
remoteFS);
}
@Override

25
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/ProvidedReplica.java
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@ -65,16 +65,23 @@ public abstract class ProvidedReplica extends ReplicaInfo {
* @param volume the volume this block belongs to
*/
public ProvidedReplica(long blockId, URI fileURI, long fileOffset,
long blockLen, long genStamp, FsVolumeSpi volume, Configuration conf) {
long blockLen, long genStamp, FsVolumeSpi volume, Configuration conf,
FileSystem remoteFS) {
super(volume, blockId, blockLen, genStamp);
this.fileURI = fileURI;
this.fileOffset = fileOffset;
this.conf = conf;
try {
this.remoteFS = FileSystem.get(fileURI, this.conf);
} catch (IOException e) {
LOG.warn("Failed to obtain filesystem for " + fileURI);
this.remoteFS = null;
if (remoteFS != null) {
this.remoteFS = remoteFS;
} else {
LOG.warn(
"Creating an reference to the remote FS for provided block " + this);
try {
this.remoteFS = FileSystem.get(fileURI, this.conf);
} catch (IOException e) {
LOG.warn("Failed to obtain filesystem for " + fileURI);
this.remoteFS = null;
}
}
}
@ -83,11 +90,7 @@ public abstract class ProvidedReplica extends ReplicaInfo {
this.fileURI = r.fileURI;
this.fileOffset = r.fileOffset;
this.conf = r.conf;
try {
this.remoteFS = FileSystem.newInstance(fileURI, this.conf);
} catch (IOException e) {
this.remoteFS = null;
}
this.remoteFS = r.remoteFS;
}
@Override

11
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/ReplicaBuilder.java
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@ -20,6 +20,7 @@ package org.apache.hadoop.hdfs.server.datanode;
import java.io.File;
import java.net.URI;
import org.apache.hadoop.fs.FileSystem;
import org.apache.hadoop.hdfs.server.datanode.fsdataset.FsVolumeSpi;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.fs.StorageType;
@ -50,6 +51,7 @@ public class ReplicaBuilder {
private long offset;
private Configuration conf;
private FileRegion fileRegion;
private FileSystem remoteFS;
public ReplicaBuilder(ReplicaState state) {
volume = null;
@ -138,6 +140,11 @@ public class ReplicaBuilder {
return this;
}
public ReplicaBuilder setRemoteFS(FileSystem remoteFS) {
this.remoteFS = remoteFS;
return this;
}
public LocalReplicaInPipeline buildLocalReplicaInPipeline()
throws IllegalArgumentException {
LocalReplicaInPipeline info = null;
@ -275,14 +282,14 @@ public class ReplicaBuilder {
}
if (fileRegion == null) {
info = new FinalizedProvidedReplica(blockId, uri, offset,
length, genStamp, volume, conf);
length, genStamp, volume, conf, remoteFS);
} else {
info = new FinalizedProvidedReplica(fileRegion.getBlock().getBlockId(),
fileRegion.getPath().toUri(),
fileRegion.getOffset(),
fileRegion.getBlock().getNumBytes(),
fileRegion.getBlock().getGenerationStamp(),
volume, conf);
volume, conf, remoteFS);
}
return info;
}

17
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/fsdataset/impl/ProvidedVolumeImpl.java
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@ -28,6 +28,7 @@ import java.util.Map.Entry;
import java.util.concurrent.ConcurrentHashMap;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.fs.FileSystem;
import org.apache.hadoop.fs.StorageType;
import org.apache.hadoop.hdfs.DFSConfigKeys;
import org.apache.hadoop.hdfs.protocol.Block;
@ -96,7 +97,8 @@ public class ProvidedVolumeImpl extends FsVolumeImpl {
}
public void getVolumeMap(ReplicaMap volumeMap,
RamDiskReplicaTracker ramDiskReplicaMap) throws IOException {
RamDiskReplicaTracker ramDiskReplicaMap, FileSystem remoteFS)
throws IOException {
Iterator<FileRegion> iter = provider.iterator();
while (iter.hasNext()) {
FileRegion region = iter.next();
@ -112,9 +114,10 @@ public class ProvidedVolumeImpl extends FsVolumeImpl {
.setGenerationStamp(region.getBlock().getGenerationStamp())
.setFsVolume(providedVolume)
.setConf(conf)
.setRemoteFS(remoteFS)
.build();
// check if the replica already exists
ReplicaInfo oldReplica = volumeMap.get(bpid, newReplica.getBlockId());
ReplicaInfo oldReplica =
volumeMap.get(bpid, newReplica.getBlockId());
if (oldReplica == null) {
volumeMap.add(bpid, newReplica);
bpVolumeMap.add(bpid, newReplica);
@ -163,6 +166,8 @@ public class ProvidedVolumeImpl extends FsVolumeImpl {
new ConcurrentHashMap<String, ProvidedBlockPoolSlice>();
private ProvidedVolumeDF df;
//the remote FileSystem to which this ProvidedVolume points to.
private FileSystem remoteFS;
ProvidedVolumeImpl(FsDatasetImpl dataset, String storageID,
StorageDirectory sd, FileIoProvider fileIoProvider,
@ -176,6 +181,7 @@ public class ProvidedVolumeImpl extends FsVolumeImpl {
conf.getClass(DFSConfigKeys.DFS_PROVIDER_DF_CLASS,
DefaultProvidedVolumeDF.class, ProvidedVolumeDF.class);
df = ReflectionUtils.newInstance(dfClass, conf);
remoteFS = FileSystem.get(baseURI, conf);
}
@Override
@ -397,7 +403,7 @@ public class ProvidedVolumeImpl extends FsVolumeImpl {
throws IOException {
LOG.info("Creating volumemap for provided volume " + this);
for(ProvidedBlockPoolSlice s : bpSlices.values()) {
s.getVolumeMap(volumeMap, ramDiskReplicaMap);
s.getVolumeMap(volumeMap, ramDiskReplicaMap, remoteFS);
}
}
@ -414,7 +420,8 @@ public class ProvidedVolumeImpl extends FsVolumeImpl {
void getVolumeMap(String bpid, ReplicaMap volumeMap,
final RamDiskReplicaTracker ramDiskReplicaMap)
throws IOException {
getProvidedBlockPoolSlice(bpid).getVolumeMap(volumeMap, ramDiskReplicaMap);
getProvidedBlockPoolSlice(bpid).getVolumeMap(volumeMap, ramDiskReplicaMap,
remoteFS);
}
@VisibleForTesting

2
hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/datanode/TestProvidedReplicaImpl.java
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@ -87,7 +87,7 @@ public class TestProvidedReplicaImpl {
FILE_LEN >= (i+1)*BLK_LEN ? BLK_LEN : FILE_LEN - i*BLK_LEN;
replicas.add(
new FinalizedProvidedReplica(i, providedFile.toURI(), i*BLK_LEN,
currentReplicaLength, 0, null, conf));
currentReplicaLength, 0, null, conf, null));
}
}