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From "Hairong Kuang (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-1826) NameNode should save image to name directories in parallel during upgrade
Date Wed, 27 Apr 2011 18:56:03 GMT

    [ https://issues.apache.org/jira/browse/HDFS-1826?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13025950#comment-13025950
] 

Hairong Kuang commented on HDFS-1826:
-------------------------------------

Matt, you are right. SaveCurrent already takes care of storage types. I looked at 0.20.

> 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
>
>
> 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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