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From "Andrew Purtell (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HBASE-730) On startup, rinse STARTCODE and SERVER from .META.
Date Wed, 09 Jul 2008 15:11:31 GMT

    [ https://issues.apache.org/jira/browse/HBASE-730?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12612138#action_12612138
] 

Andrew Purtell commented on HBASE-730:
--------------------------------------

Scanning meta ahead of schedule on startup could be done by just interrupting the MetaScanner
thread at the right point in the startup sequence. Maybe that is enough? 

{code}
master.regionManager.metaScannerThread.interrupt();
{code}

> On startup, rinse STARTCODE and SERVER from .META.
> --------------------------------------------------
>
>                 Key: HBASE-730
>                 URL: https://issues.apache.org/jira/browse/HBASE-730
>             Project: Hadoop HBase
>          Issue Type: Improvement
>            Reporter: stack
>            Assignee: Jean-Daniel Cryans
>             Fix For: 0.2.0
>
>         Attachments: hbase-730-v1.patch
>
>
> Look into what it would take purging startcode and server from .META. on startup.  It
might make startup run faster.  In particular, Clint Morgan was asking for faster startup.
 Below is from a reply.  The +1 is from JK.
> > > Looking at code, we have the concept of an 'initial' scan.  I
> > > wonder if things would run faster for you if on the initial
> > > scan we just cleared all SERVER and STARTCODE entries in
> > > .META. rather than wait on regionserver reports?
> +1

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