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HDFS-10773. BlockSender should not synchronize on the dataset object. (Contributed by Chen Liang)

This commit is contained in:
Arpit Agarwal 2016-08-17 16:29:08 -07:00
parent 2aa5e2c403
commit ca13e7971d
1 changed files with 2 additions and 1 deletions
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3
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/BlockSender.java
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@ -46,6 +46,7 @@ import org.apache.hadoop.io.LongWritable;
import org.apache.hadoop.io.ReadaheadPool.ReadaheadRequest; import org.apache.hadoop.io.ReadaheadPool.ReadaheadRequest;
import org.apache.hadoop.io.nativeio.NativeIO; import org.apache.hadoop.io.nativeio.NativeIO;
import org.apache.hadoop.net.SocketOutputStream; import org.apache.hadoop.net.SocketOutputStream;
import org.apache.hadoop.util.AutoCloseableLock;
import org.apache.hadoop.util.DataChecksum; import org.apache.hadoop.util.DataChecksum;
import org.apache.htrace.core.TraceScope; import org.apache.htrace.core.TraceScope;
@ -239,7 +240,7 @@ class BlockSender implements java.io.Closeable {
final Replica replica; final Replica replica;
final long replicaVisibleLength; final long replicaVisibleLength;
synchronized(datanode.data) { try(AutoCloseableLock lock = datanode.data.acquireDatasetLock()) {
replica = getReplica(block, datanode); replica = getReplica(block, datanode);
replicaVisibleLength = replica.getVisibleLength(); replicaVisibleLength = replica.getVisibleLength();
} }