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From "Hudson (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-1826) NameNode should save image to name directories in parallel during upgrade
Date Fri, 01 Jul 2011 12:44:29 GMT

    [ https://issues.apache.org/jira/browse/HDFS-1826?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13058531#comment-13058531
] 

Hudson commented on HDFS-1826:
------------------------------

Integrated in Hadoop-Hdfs-trunk #712 (See [https://builds.apache.org/job/Hadoop-Hdfs-trunk/712/])
    HDFS-1955. FSImage.doUpgrade() was made too fault-tolerant by HDFS-1826. Contributed by
Matt Foley.

mattf : http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1141658
Files : 
* /hadoop/common/trunk/hdfs/CHANGES.txt
* /hadoop/common/trunk/hdfs/src/test/hdfs/org/apache/hadoop/hdfs/TestDFSUpgrade.java
* /hadoop/common/trunk/hdfs/src/java/org/apache/hadoop/hdfs/server/namenode/FSImage.java
* /hadoop/common/trunk/hdfs/src/java/org/apache/hadoop/hdfs/server/namenode/FSEditLog.java
* /hadoop/common/trunk/hdfs/src/java/org/apache/hadoop/hdfs/server/namenode/NNStorage.java


> 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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