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https://issues.apache.org/jira/browse/HDFS-4736?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13640994#comment-13640994
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Tsz Wo (Nicholas), SZE commented on HDFS-4736:
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I have verified it. This is a general chmod problem in branch-1.
> SnapshotAccessControlException does not return valid exit codes
> ---------------------------------------------------------------
>
> Key: HDFS-4736
> URL: https://issues.apache.org/jira/browse/HDFS-4736
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Components: datanode, namenode
> Reporter: Ramya Sunil
> Assignee: Tsz Wo (Nicholas), SZE
> Fix For: Snapshot (HDFS-2802)
>
>
> When some dfs operations fail due to SnapshotAccessControlException, valid
> exit codes are not returned.
> E.g:
> -bash-4.1$ hadoop dfs -chmod -R 755
> /user/foo/hdfs-snapshots/test0/.snapshot/s0
> chmod: changing permissions of
> 'hdfs://<namenode>:8020/user/foo/hdfs-snapshots/test0/.snapshot/s0':org.apache.hadoop.hdfs.server.namenode.snapshot.SnapshotAccessControlException:
> Modification on read-only snapshot is disallowed
> -bash-4.1$ echo $?
> 0
> -bash-4.1$ hadoop dfs -chown -R hdfs:users
> /user/foo/hdfs-snapshots/test0/.snapshot/s0
> chown: changing ownership of
> 'hdfs://<namenode>:8020/user/foo/hdfs-snapshots/test0/.snapshot/s0':org.apache.hadoop.hdfs.server.namenode.snapshot.SnapshotAccessControlException:
> Modification on read-only snapshot is disallowed
> -bash-4.1$ echo $?
> 0
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