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https://issues.apache.org/jira/browse/HDFS-10809?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15447449#comment-15447449
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Vinitha Reddy Gankidi commented on HDFS-10809:
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[~zhz] I have uploaded a patch. Please take a look.
> getNumEncryptionZones causes NPE in branch-2.7
> ----------------------------------------------
>
> Key: HDFS-10809
> URL: https://issues.apache.org/jira/browse/HDFS-10809
> Project: Hadoop HDFS
> Issue Type: Bug
> Components: encryption, namenode
> Affects Versions: 2.7.4
> Reporter: Zhe Zhang
> Assignee: Vinitha Reddy Gankidi
> Attachments: HDFS-10809.001.patch
>
>
> This bug was caused by the fact that we did HDFS-10458 from trunk to
> branch-2.7, but we did HDFS-8721 initially up to branch-2.8. So from
> branch-2.8 and up, the order is HDFS-8721 -> HDFS-10458. But in branch-2.7,
> we have the reverse order. Hence the inconsistency.
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