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https://issues.apache.org/jira/browse/HDFS-2120?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13065216#comment-13065216
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Hudson commented on HDFS-2120:
------------------------------
Integrated in Hadoop-Hdfs-trunk #724 (See
[https://builds.apache.org/job/Hadoop-Hdfs-trunk/724/])
HDFS-2120. on reconnect, DN can connect to NN even with different source
versions. (John George via atm)
atm : http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1146516
Files :
* /hadoop/common/trunk/hdfs/CHANGES.txt
*
/hadoop/common/trunk/hdfs/src/java/org/apache/hadoop/hdfs/server/datanode/DataNode.java
*
/hadoop/common/trunk/hdfs/src/test/hdfs/org/apache/hadoop/hdfs/server/datanode/TestDatanodeRegister.java
*
/hadoop/common/trunk/hdfs/src/java/org/apache/hadoop/hdfs/server/common/IncorrectVersionException.java
> on reconnect, DN can connect to NN even with different source versions
> ----------------------------------------------------------------------
>
> Key: HDFS-2120
> URL: https://issues.apache.org/jira/browse/HDFS-2120
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: data-node
> Reporter: John George
> Assignee: John George
> Attachments: HDFS-2120-2.patch, HDFS-2120-3.patch, HDFS-2120-4.patch,
> HDFS-2120.patch
>
>
> DN or NN does not check for source versions in cases when NN goes away or has
> lost connection. The only check that is done by NN is for LAYOUT_VERSION and
> DN does not check for any version mismatch.
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