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https://issues.apache.org/jira/browse/HDFS-4998?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13711105#comment-13711105
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Hudson commented on HDFS-4998:
------------------------------
SUCCESS: Integrated in Hadoop-Mapreduce-trunk #1490 (See
[https://builds.apache.org/job/Hadoop-Mapreduce-trunk/1490/])
HDFS-4998. TestUnderReplicatedBlocks fails intermittently. Contributed by
Kihwal Lee. (kihwal:
http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1503971)
* /hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt
*
/hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/blockmanagement/TestUnderReplicatedBlocks.java
> TestUnderReplicatedBlocks fails intermittently
> ----------------------------------------------
>
> Key: HDFS-4998
> URL: https://issues.apache.org/jira/browse/HDFS-4998
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: test
> Affects Versions: 2.1.0-beta
> Reporter: Kihwal Lee
> Assignee: Kihwal Lee
> Fix For: 3.0.0, 2.1.0-beta, 0.23.10
>
> Attachments: HDFS-4998.branch-023.patch, HDFS-4998.trunk.patch
>
>
> Looking at branch-2.1-beta jenkins build, this test case seems flaky.
> First, addToInvalidates() is called against a block on a datanode. This
> removes the dn from the BlockInfo in blocksMap.
> At this point, raising the replication factor can cause the same node to be
> picked. If the node has already deleted the block, it will work. If not, the
> replication fails. When it fails, it will take at least the pending
> replication timeout to reschedule, which is 5 minutes. But the test will
> timeout before this and fail.
> We could make it wait for the completion of actual block deletion. Or the
> test timeout can be made a lot longer, but past jiras against this test case
> indicate people want this to run faster.
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