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Posted to hdfs-issues@hadoop.apache.org by "Íñigo Goiri (Jira)" <ji...@apache.org> on 2020/09/01 22:06:00 UTC

[jira] [Commented] (HDFS-15554) RBF: force router check file existence before adding/updating mount points

    [ https://issues.apache.org/jira/browse/HDFS-15554?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17188834#comment-17188834 ] 

Íñigo Goiri commented on HDFS-15554:
------------------------------------

Thanks [~fengnanli] for the JIRA, can you sync the title of the PR and the JIRA?

> RBF: force router check file existence before adding/updating mount points
> --------------------------------------------------------------------------
>
>                 Key: HDFS-15554
>                 URL: https://issues.apache.org/jira/browse/HDFS-15554
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>            Reporter: Fengnan Li
>            Assignee: Fengnan Li
>            Priority: Minor
>
> Adding/Updating mount points right now is only a router action without validation in the downstream namenodes for the destination files/directories.
> In practice we have set up the dangling mount points and when clients call listStatus they would get the file returned, but then if they try to access the file FileNotFoundException would be thrown out.



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