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https://issues.apache.org/jira/browse/HDFS-4978?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13706107#comment-13706107
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Suresh Srinivas commented on HDFS-4978:
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+1
> Make disallowSnapshot idempotent
> --------------------------------
>
> Key: HDFS-4978
> URL: https://issues.apache.org/jira/browse/HDFS-4978
> Project: Hadoop HDFS
> Issue Type: Improvement
> Affects Versions: 3.0.0
> Reporter: Jing Zhao
> Assignee: Jing Zhao
> Attachments: HDFS-4978.001.patch, HDFS-4978.002.patch,
> HDFS-4978.003.patch, HDFS-4978.004.patch
>
>
> Currently disallowSnapshot is not idempotent: an exception will be thrown
> when the directory is already non-snapshottable. This jira tries to make it
> idempotent.
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