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HDFS-7884. Fix NullPointerException in BlockSender when the generation stamp provided by the client is larger than the one stored in the datanode. Contributed by Brahma Reddy Battula

This commit is contained in:
Tsz-Wo Nicholas Sze 2015-03-24 13:49:17 +09:00
parent cbdcdfad6d
commit fe693b72de
2 changed files with 11 additions and 0 deletions
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4
hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt
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@ -937,6 +937,10 @@ Release 2.7.0 - UNRELEASED
HDFS-7881. TestHftpFileSystem#testSeek fails in branch-2.
(Brahma Reddy Battula via aajisaka)
HDFS-7884. Fix NullPointerException in BlockSender when the generation stamp
provided by the client is larger than the one stored in the datanode.
(Brahma Reddy Battula via szetszwo)
BREAKDOWN OF HDFS-7584 SUBTASKS AND RELATED JIRAS
HDFS-7720. Quota by Storage Type API, tools and ClientNameNode

7
hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/datanode/BlockSender.java
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@ -246,6 +246,13 @@ class BlockSender implements java.io.Closeable {
if (replica.getGenerationStamp() < block.getGenerationStamp()) {
throw new IOException("Replica gen stamp < block genstamp, block="
+ block + ", replica=" + replica);
} else if (replica.getGenerationStamp() > block.getGenerationStamp()) {
if (DataNode.LOG.isDebugEnabled()) {
DataNode.LOG.debug("Bumping up the client provided"
+ " block's genstamp to latest " + replica.getGenerationStamp()
+ " for block " + block);
}
block.setGenerationStamp(replica.getGenerationStamp());
}
if (replicaVisibleLength < 0) {
throw new IOException("Replica is not readable, block="