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Posted to common-issues@hadoop.apache.org by "Colin Patrick McCabe (JIRA)" <ji...@apache.org> on 2016/05/13 20:31:13 UTC

[jira] [Comment Edited] (HADOOP-10942) Globbing optimizations and regression fix

    [ https://issues.apache.org/jira/browse/HADOOP-10942?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15283108#comment-15283108 ] 

Colin Patrick McCabe edited comment on HADOOP-10942 at 5/13/16 8:31 PM:
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The regression referred to here was fixed in HADOOP-10957.  The optimizations are already implemented (we don't perform an RPC on each path component, only when we need to do so to implement a wildcard.)


was (Author: cmccabe):
The regression fix referred to here was fixed in HADOOP-10957.  The optimizations are already implemented (we don't perform an RPC on each path component, only when we need to do so to implement a wildcard.)

> Globbing optimizations and regression fix
> -----------------------------------------
>
>                 Key: HADOOP-10942
>                 URL: https://issues.apache.org/jira/browse/HADOOP-10942
>             Project: Hadoop Common
>          Issue Type: Bug
>          Components: fs
>    Affects Versions: 2.1.0-beta, 3.0.0-alpha1
>            Reporter: Daryn Sharp
>            Assignee: Daryn Sharp
>            Priority: Critical
>              Labels: BB2015-05-TBR
>         Attachments: HADOOP-10942.patch
>
>
> When globbing was commonized to support both filesystem and filecontext, it regressed a fix that prevents an intermediate glob that matches a file from throwing a confusing permissions exception.  The hdfs traverse check requires the exec bit which a file does not have.
> Additional optimizations to reduce rpcs actually increases them if directories contain 1 item.



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