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https://issues.apache.org/jira/browse/HDFS-15082?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17081664#comment-17081664
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Ayush Saxena commented on HDFS-15082:
-------------------------------------
Need to find a better place to document, so if somebody starts facing issues
due to this introduction, anyway reaches it easily. Don't think we can document
it at {{hdfs-defaults}}, haven't seen rbf related stuff on any Namenode config.
There are couple of the other ALT's too, we get a new RBF side config, make the
default as -1, which means length won't be checked by default and if the ADMIN
explicitly configures, then we keep this logic.
We can get the values from namenode, but I don't think that is too
straightforward or might not be worth doing.
If none of the above looks better and if everyone is good with this. then just
find a good place to document. :)
[~elgoiri] any thoughts on this, I am not sure but can the present approach be
considered incompatible?
> RBF: Check each component length of destination path when add/update mount
> entry
> --------------------------------------------------------------------------------
>
> Key: HDFS-15082
> URL: https://issues.apache.org/jira/browse/HDFS-15082
> Project: Hadoop HDFS
> Issue Type: Sub-task
> Components: rbf
> Reporter: Xiaoqiao He
> Assignee: Xiaoqiao He
> Priority: Major
> Attachments: HDFS-15082.001.patch, HDFS-15082.002.patch,
> HDFS-15082.003.patch
>
>
> When add/update mount entry, each component length of destination path could
> exceed filesystem path component length limit, reference to
> `dfs.namenode.fs-limits.max-component-length` of NameNode. So we should check
> each component length of destination path when add/update mount entry at
> Router side.
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