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From "stack (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HBASE-1945) Remove META and ROOT memcache size bandaid
Date Fri, 30 Oct 2009 04:24:59 GMT

    [ https://issues.apache.org/jira/browse/HBASE-1945?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12771768#action_12771768
] 

stack commented on HBASE-1945:
------------------------------

+1

> Remove META and ROOT memcache size bandaid 
> -------------------------------------------
>
>                 Key: HBASE-1945
>                 URL: https://issues.apache.org/jira/browse/HBASE-1945
>             Project: Hadoop HBase
>          Issue Type: Improvement
>            Reporter: Jean-Daniel Cryans
>             Fix For: 0.21.0
>
>
> In 0.19 I introduced a bandaid to limit the damage done to losing the RS holding META
or ROOT by drastically lowering the memstore size. Example: 
> {code}
>   public static final HTableDescriptor ROOT_TABLEDESC = new HTableDescriptor(
>       HConstants.ROOT_TABLE_NAME,
>       new HColumnDescriptor[] { new HColumnDescriptor(HConstants.CATALOG_FAMILY,
>           10,  // Ten is arbitrary number.  Keep versions to help debuggging.
>           Compression.Algorithm.NONE.getName(), false, true, 8 * 1024,
>           HConstants.FOREVER, false) });
> {code}
> We can remove it from 0.21 since we force sync everything catalog.

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