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https://issues.apache.org/jira/browse/HDFS-14853?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16939836#comment-16939836
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Ayush Saxena commented on HDFS-14853:
-------------------------------------
Just realized branch-2 doesn't have {{DatanodeID.EMPTY_DATANODE_ID}}, replacing
it with actual definition for branch-2 Addendum.
> NPE in DFSNetworkTopology#chooseRandomWithStorageType() when the excludedNode
> is not present
> --------------------------------------------------------------------------------------------
>
> Key: HDFS-14853
> URL: https://issues.apache.org/jira/browse/HDFS-14853
> Project: Hadoop HDFS
> Issue Type: Bug
> Reporter: Ranith Sardar
> Assignee: Ranith Sardar
> Priority: Major
> Fix For: 2.10.0, 3.3.0, 3.1.4, 3.2.2
>
> Attachments: HDFS-14853.001.patch, HDFS-14853.002.patch,
> HDFS-14853.003.patch
>
>
>
> {{org.apache.hadoop.ipc.RemoteException(java.lang.NullPointerException):
> java.lang.NullPointerException
> at
> org.apache.hadoop.hdfs.net.DFSNetworkTopology.chooseRandomWithStorageType(DFSNetworkTopology.java:229)
> at
> org.apache.hadoop.hdfs.net.DFSNetworkTopology.chooseRandomWithStorageType(DFSNetworkTopology.java:77)}}
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