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From "Jakob Homan (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HADOOP-7133) CLONE to COMMON - HDFS-1445 Batch the calls in DataStorage to FileUtil.createHardLink(), so we call it once per directory instead of once per file
Date Wed, 09 Mar 2011 20:46:59 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-7133?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13004790#comment-13004790
] 

Jakob Homan commented on HADOOP-7133:
-------------------------------------

Hairong: Good suggestion on the threadlocal.  I'm ready to commit this as is.  Would you be
ok with doing that optimization in separate JIRA?

> CLONE to COMMON - HDFS-1445 Batch the calls in DataStorage to FileUtil.createHardLink(),
so we call it once per directory instead of once per file
> --------------------------------------------------------------------------------------------------------------------------------------------------
>
>                 Key: HADOOP-7133
>                 URL: https://issues.apache.org/jira/browse/HADOOP-7133
>             Project: Hadoop Common
>          Issue Type: Improvement
>          Components: util
>    Affects Versions: 0.20.2
>            Reporter: Matt Foley
>            Assignee: Matt Foley
>             Fix For: 0.22.0
>
>         Attachments: HDFS-1445-trunk.v23_common_1-of-3.patch
>
>
> The fix for HDFS-1445 "Batch the calls in DataStorage to FileUtil.createHardLink(), so
we call it once per directory instead of once per file" requires coordinated change in COMMON
and HDFS.  This is the COMMON portion, submitted here under a separate bug to activate the
automated testing.
> Warning: this patch to COMMON, by itself, will break HDFS.  It requires coordinated commit
of the HDFS portion of the patch in HDFS-1445.

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