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From "Jeffrey Zhong (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HBASE-8631) Meta Region First Recovery
Date Tue, 28 May 2013 18:54:21 GMT

    [ https://issues.apache.org/jira/browse/HBASE-8631?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13668558#comment-13668558
] 

Jeffrey Zhong commented on HBASE-8631:
--------------------------------------

{quote}
I think it is handled in the MetaServerShutdownHandler's process()?
{quote}
MetaSSH can deal with one RS failure which put meta wal firstly. While even in that case,
if we already have bunch of wals files in log splitting process, it still has issue.
                
> Meta Region First Recovery
> --------------------------
>
>                 Key: HBASE-8631
>                 URL: https://issues.apache.org/jira/browse/HBASE-8631
>             Project: HBase
>          Issue Type: Bug
>          Components: MTTR
>            Reporter: Jeffrey Zhong
>            Assignee: Jeffrey Zhong
>
> We have a separate wal for meta region. While log splitting logic haven't taken the advantage
of this and splitlogworker still picks a wal file randomly. Imaging if we have multiple region
servers including meta RS fails about the same time while meta wal is recovered last, all
failed regions have to wait meta recovered and then can be online again. 
> The open JIRA is to let splitlogworker to pick a meta wal file firstly and then others.

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