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From "Hudson (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-2753) Standby namenode stuck in safemode during a failover
Date Wed, 11 Jan 2012 12:55:39 GMT

    [ https://issues.apache.org/jira/browse/HDFS-2753?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13184034#comment-13184034
] 

Hudson commented on HDFS-2753:
------------------------------

Integrated in Hadoop-Hdfs-HAbranch-build #44 (See [https://builds.apache.org/job/Hadoop-Hdfs-HAbranch-build/44/])
    HDFS-2753. Fix standby getting stuck in safemode when blocks are written while SBN is
down. Contributed by Hari Mankude and Todd Lipcon.

todd : http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1229898
Files : 
* /hadoop/common/branches/HDFS-1623/hadoop-hdfs-project/hadoop-hdfs/CHANGES.HDFS-1623.txt
* /hadoop/common/branches/HDFS-1623/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/blockmanagement/BlockManager.java
* /hadoop/common/branches/HDFS-1623/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/blockmanagement/DatanodeDescriptor.java
* /hadoop/common/branches/HDFS-1623/hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/namenode/ha/TestHASafeMode.java

                
> Standby namenode stuck in safemode during a failover
> ----------------------------------------------------
>
>                 Key: HDFS-2753
>                 URL: https://issues.apache.org/jira/browse/HDFS-2753
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>          Components: ha, name-node
>    Affects Versions: HA branch (HDFS-1623)
>            Reporter: Hari Mankude
>            Assignee: Hari Mankude
>             Fix For: HA branch (HDFS-1623)
>
>         Attachments: HDFS-2753.patch, hdfs-2753.txt, hdfs-2753.txt
>
>
> Write traffic initiated from the client. Manual failover is done by killing NN and converting
a  different standby to active. NN is restarted as standby. The restarted standby stays in
safemode forever. More information in the description.

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