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From "Hudson (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HDFS-2667) HA: Fix NN Active->Standby transition
Date Fri, 16 Dec 2011 16:38:32 GMT

    [ https://issues.apache.org/jira/browse/HDFS-2667?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13171061#comment-13171061
] 

Hudson commented on HDFS-2667:
------------------------------

Integrated in Hadoop-Hdfs-HAbranch-build #18 (See [https://builds.apache.org/job/Hadoop-Hdfs-HAbranch-build/18/])
    HDFS-2667. Fix transition from active to standby. Contributed by Todd Lipcon.

todd : http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1215037
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/namenode/FSImage.java
* /hadoop/common/branches/HDFS-1623/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/FSNamesystem.java
* /hadoop/common/branches/HDFS-1623/hadoop-hdfs-project/hadoop-hdfs/src/main/java/org/apache/hadoop/hdfs/server/namenode/FileJournalManager.java
* /hadoop/common/branches/HDFS-1623/hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/MiniDFSCluster.java
* /hadoop/common/branches/HDFS-1623/hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/namenode/TestFileJournalManager.java
* /hadoop/common/branches/HDFS-1623/hadoop-hdfs-project/hadoop-hdfs/src/test/java/org/apache/hadoop/hdfs/server/namenode/ha/TestHAStateTransitions.java

                
> HA: Fix NN Active->Standby transition
> -------------------------------------
>
>                 Key: HDFS-2667
>                 URL: https://issues.apache.org/jira/browse/HDFS-2667
>             Project: Hadoop HDFS
>          Issue Type: Sub-task
>          Components: ha, name-node
>    Affects Versions: HA branch (HDFS-1623)
>            Reporter: Todd Lipcon
>            Assignee: Todd Lipcon
>             Fix For: HA branch (HDFS-1623)
>
>         Attachments: hdfs-2667.txt, hdfs-2667.txt, hdfs-2667.txt, hdfs-2667.txt
>
>
> Currently when the active transitions to standby (eg for a manual failover) the EditLogTailer
starts tailing edits at the wrong transaction ID. This causes it to double-apply a bunch of
edits, which causes various problems. We need to add a test which checks this state transition
and fix any related bugs.

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