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https://issues.apache.org/jira/browse/HDFS-3087?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13946532#comment-13946532
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Hudson commented on HDFS-3087:
------------------------------
FAILURE: Integrated in Hadoop-Mapreduce-trunk #1737 (See
[https://builds.apache.org/job/Hadoop-Mapreduce-trunk/1737/])
HDFS-3087. Decomissioning on NN restart can complete without blocks being
replicated. Contributed by Rushabh S Shah. (kihwal:
http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1580886)
* /hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/CHANGES.txt
*
/hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/blockmanagement/DatanodeDescriptor.java
*
/hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/blockmanagement/DatanodeManager.java
*
/hadoop/common/trunk/hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/TestDecommission.java
> Decomissioning on NN restart can complete without blocks being replicated
> -------------------------------------------------------------------------
>
> Key: HDFS-3087
> URL: https://issues.apache.org/jira/browse/HDFS-3087
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: namenode
> Affects Versions: 0.23.0
> Reporter: Kihwal Lee
> Assignee: Rushabh S Shah
> Priority: Critical
> Fix For: 3.0.0, 2.5.0
>
> Attachments: HDFS-3087.patch
>
>
> If a data node is added to the exclude list and the name node is restarted,
> the decomissioning happens right away on the data node registration. At this
> point the initial block report has not been sent, so the name node thinks the
> node has zero blocks and the decomissioning completes very quick, without
> replicating the blocks on that node.
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