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HDFS-5747. Fix NPEs in BlockManager. (Arpit Agarwal) 

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1557289 13f79535-47bb-0310-9956-ffa450edef68
This commit is contained in:
Arpit Agarwal 2014-01-11 00:05:55 +00:00
parent 6608b75829
commit 9d382a4174
3 changed files with 8 additions and 4 deletions
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2
hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt
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@ -744,6 +744,8 @@ Release 2.4.0 - UNRELEASED
HDFS-5756. hadoopRzOptionsSetByteBufferPool does not accept NULL argument,
contrary to docs. (cmccabe via wang)
HDFS-5747. Fix NPEs in BlockManager. (Arpit Agarwal)
BREAKDOWN OF HDFS-2832 SUBTASKS AND RELATED JIRAS
HDFS-4985. Add storage type to the protocol and expose it in block report

8
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/blockmanagement/BlockInfoUnderConstruction.java
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@ -324,12 +324,14 @@ public class BlockInfoUnderConstruction extends BlockInfo {
Iterator<ReplicaUnderConstruction> it = replicas.iterator();
while (it.hasNext()) {
ReplicaUnderConstruction r = it.next();
if(r.getExpectedStorageLocation() == storage) {
DatanodeStorageInfo expectedLocation = r.getExpectedStorageLocation();
if(expectedLocation == storage) {
// Record the gen stamp from the report
r.setGenerationStamp(block.getGenerationStamp());
return;
} else if (r.getExpectedStorageLocation().getDatanodeDescriptor() ==
storage.getDatanodeDescriptor()) {
} else if (expectedLocation != null &&
expectedLocation.getDatanodeDescriptor() ==
storage.getDatanodeDescriptor()) {
// The Datanode reported that the block is on a different storage
// than the one chosen by BlockPlacementPolicy. This can occur as

2
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/NameNode.java
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@ -547,8 +547,8 @@ public class NameNode implements NameNodeStatusMXBean {
}
private void stopCommonServices() {
if(namesystem != null) namesystem.close();
if(rpcServer != null) rpcServer.stop();
if(namesystem != null) namesystem.close();
if (pauseMonitor != null) pauseMonitor.stop();
if (plugins != null) {
for (ServicePlugin p : plugins) {