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From "Juan Yu (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-964) hdfs-default.xml shouldn't use hadoop.tmp.dir for dfs.data.dir (0.20 and lower) / dfs.datanode.dir (0.21 and up)
Date Fri, 25 Jul 2014 19:19:39 GMT

    [ https://issues.apache.org/jira/browse/HDFS-964?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14074787#comment-14074787
] 

Juan Yu commented on HDFS-964:
------------------------------

Hi [~aw], this seems a good idea, why is it marked as "Won't Fix"? 
any reason, does it cause incompatibility issue? 

> hdfs-default.xml shouldn't use hadoop.tmp.dir for dfs.data.dir (0.20 and lower) / dfs.datanode.dir
(0.21 and up)
> ----------------------------------------------------------------------------------------------------------------
>
>                 Key: HDFS-964
>                 URL: https://issues.apache.org/jira/browse/HDFS-964
>             Project: Hadoop HDFS
>          Issue Type: Bug
>    Affects Versions: 0.20.2
>            Reporter: Allen Wittenauer
>            Assignee: Allen Wittenauer
>         Attachments: HDFS-964.txt
>
>
> This question/problem pops up all the time.  Can we *please* eliminate hadoop.tmp.dir's
usage from the default in dfs.data.dir.  It is confusing to new people and results in all
sorts of weird accidents.  If we want the same value, fine, but there are a lot of implied
things by the variable re-use.



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