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From "Lars Hofhansl (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-7723) Remove NN URI from ZK splitlogs.
Date Wed, 06 Feb 2013 20:11:13 GMT

    [ https://issues.apache.org/jira/browse/HBASE-7723?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13572768#comment-13572768
] 

Lars Hofhansl commented on HBASE-7723:
--------------------------------------

Only that my approach fails TestDistributedLogSplitting and yours doesn't. :)
I have no time to track that down so let's go with your approach.

Only one comment:

ZNODE_PATH_SEPARATOR is not correct here, since we building a FS path not a Zookeeper path.
Should use Path.SEPARATOR instead.
                
> Remove NN URI from ZK splitlogs.
> --------------------------------
>
>                 Key: HBASE-7723
>                 URL: https://issues.apache.org/jira/browse/HBASE-7723
>             Project: HBase
>          Issue Type: Bug
>          Components: hadoop2, master
>    Affects Versions: 0.92.0
>            Reporter: Kevin Odell
>            Assignee: Himanshu Vashishtha
>             Fix For: 0.96.0, 0.94.5
>
>         Attachments: 7723-0.94-simple.txt, HBASE-7723-94.patch, HBASE-7723-94-v2.patch,
HBASE-7723-94-v3.patch, HBASE-7723-94-v4.patch, HBASE-7723-trunk-v1.patch, HBASE-7723-trunk-v2.patch
>
>
> When moving to HDFS HA or removing HA we end up changing the NN namespace.  This can
cause the HMaster not to start up fully due to trying to split phantom HLogs pointing to the
wrong FS - java.lang.IllegalArgumentException: Wrong FS: error messages.  The HLogs in question
might not even be on HDFS anymore.  You have to go in a manually clear out the ZK splitlogs
directory to get HBase to properly boot up.

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