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https://issues.apache.org/jira/browse/HDFS-4148?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13498422#comment-13498422
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Aaron T. Myers commented on HDFS-4148:
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bq. if this is to add method ensureNotInROSnapshot(INodesInPath) in all the
modification related calls, I think getXAndEnsureMutable is cleaner.
I disagree, but reasonable people can disagree.
bq. FileSystem doesn't have createSysmlink.
Yes indeed. That's why I recommend using FileContext.
bq. I created a follow-up jira HDFS-4189 to address the feedback.
Thanks. I'm watching the JIRA and will review this as soon as you post a patch.
> Disallow write/modify operations on files and directories in a snapshot
> ------------------------------------------------------------------------
>
> Key: HDFS-4148
> URL: https://issues.apache.org/jira/browse/HDFS-4148
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Components: name-node
> Affects Versions: Snapshot (HDFS-2802)
> Reporter: Brandon Li
> Assignee: Brandon Li
> Fix For: Snapshot (HDFS-2802)
>
> Attachments: HDFS-4148.patch, HDFS-4148.patch, HDFS-4148.patch,
> HDFS-4148.patch, HDFS-4148.patch
>
>
> disallow modification on RO snapshots, including create, append,
> setReplication/Permission/Owner, rename, delete, makedir, setQuota/Time,
> createSymlink.
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