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From "Matt Foley (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-1826) NameNode should save image to name directories in parallel during upgrade
Date Tue, 03 May 2011 19:53:03 GMT

    [ https://issues.apache.org/jira/browse/HDFS-1826?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13028385#comment-13028385
] 

Matt Foley commented on HDFS-1826:
----------------------------------

All of the failed unit tests have been recurrent failures over the last many builds, and do
not seem related to this patch.

> NameNode should save image to name directories in parallel during upgrade
> -------------------------------------------------------------------------
>
>                 Key: HDFS-1826
>                 URL: https://issues.apache.org/jira/browse/HDFS-1826
>             Project: Hadoop HDFS
>          Issue Type: Improvement
>          Components: name-node
>    Affects Versions: 0.23.0
>            Reporter: Hairong Kuang
>            Assignee: Matt Foley
>             Fix For: 0.23.0
>
>         Attachments: 1826_FSImageWrite_concur_upgrade_v1.patch, 1826_FSImageWrite_concur_upgrade_v3.patch,
1826_FSImageWrite_concur_upgrade_v4.patch, 1826_FSImageWrite_concur_upgrade_v4.patch
>
>
> Currently namenode saves a new image to all its name directories in sequence during upgrade.
We should make it to do in parallel to speedup namenode upgrade. Also it should not save its
image to edits directories.

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