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From "Suresh Srinivas (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-2117) DiskChecker#mkdirsWithExistsAndPermissionCheck may return true even when the dir is not created
Date Wed, 27 Jul 2011 23:59:09 GMT

    [ https://issues.apache.org/jira/browse/HDFS-2117?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13072110#comment-13072110
] 

Suresh Srinivas commented on HDFS-2117:
---------------------------------------

Given that this is a minor change - why not just do in this?

> DiskChecker#mkdirsWithExistsAndPermissionCheck may return true even when the dir is not
created
> -----------------------------------------------------------------------------------------------
>
>                 Key: HDFS-2117
>                 URL: https://issues.apache.org/jira/browse/HDFS-2117
>             Project: Hadoop HDFS
>          Issue Type: Bug
>          Components: data-node
>    Affects Versions: 0.20.203.1
>            Reporter: Eli Collins
>            Assignee: Eli Collins
>            Priority: Minor
>             Fix For: 0.20.205.0
>
>         Attachments: hdfs-2117-1.patch
>
>
> In branch-0.20-security as part of HADOOP-6566, DiskChecker#mkdirsWithExistsAndPermissionCheck
will return true even if it wasn't able to create the directory, which means instead of throwing
a DiskErrorException the code will proceed to getFileStatus and throw a FNF exception. Post
HADOOP-7040, which modified makeInstance to catch not just DiskErrorExceptions but IOExceptions
as well, this is not an issue since now the exception is caught either way. But for future
modifications we should still modify this method to return false if it was unable to create
the directory. This code is totally different in trunk, so not an issue there.

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