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From "Jeffrey Zhong (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HBASE-8631) Meta Region First Recovery
Date Thu, 30 May 2013 01:10:21 GMT

     [ https://issues.apache.org/jira/browse/HBASE-8631?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Jeffrey Zhong updated HBASE-8631:
---------------------------------

    Attachment: hbase-8631-v3.patch

v3 patch address Devaraj's comments. 

{quote}
Are the timeout related changes in HLogSplitter relevant to this issue?
{quote}
It's remotely related. The change is to make splitlogworker fail fast so Meta region will
likely be picked up soon if Meta RS fails during a recovery process.

I addressed your other 3 comments. Thanks for the reviewing! 

                
> 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
>         Attachments: hbase-8631.patch, hbase-8631-v2.patch, hbase-8631-v3.patch
>
>
> 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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