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From "Jitendra Nath Pandey (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-14112) Avoid recursive call to external authorizer for getContentSummary.
Date Thu, 29 Nov 2018 21:51:00 GMT

    [ https://issues.apache.org/jira/browse/HDFS-14112?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16703871#comment-16703871

Jitendra Nath Pandey commented on HDFS-14112:

+1 for the latest patch.

> Avoid recursive call to external authorizer for getContentSummary.
> ------------------------------------------------------------------
>                 Key: HDFS-14112
>                 URL: https://issues.apache.org/jira/browse/HDFS-14112
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>          Components: namenode
>            Reporter: Jitendra Nath Pandey
>            Assignee: Tsz Wo Nicholas Sze
>            Priority: Critical
>         Attachments: h14112_20181128.patch, h14112_20181129.patch
> HDFS-12130 optimizes permission check, and invokes permission checker recursively for
each component of the tree, which works well for FSPermission checker.
> But for certain external authorizers it may be more efficient to make one call with {{subaccess}},
because often they don't have to evaluate for each and every component of the path.

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