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Posted to issues@hbase.apache.org by "Hbase Build Acct (JIRA)" <ji...@apache.org> on 2010/04/02 21:08:27 UTC

[jira] Commented: (HBASE-2252) Mapping a very big table kills region servers

    [ https://issues.apache.org/jira/browse/HBASE-2252?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12852922#action_12852922 ] 

Hbase Build Acct commented on HBASE-2252:
-----------------------------------------

+1 on patch

On Tue, Mar 30, 2010 at 3:42 PM, Jean-Daniel Cryans (JIRA)


> Mapping a very big table kills region servers
> ---------------------------------------------
>
>                 Key: HBASE-2252
>                 URL: https://issues.apache.org/jira/browse/HBASE-2252
>             Project: Hadoop HBase
>          Issue Type: Bug
>            Reporter: Jean-Daniel Cryans
>            Assignee: Jean-Daniel Cryans
>             Fix For: 0.20.4, 0.21.0
>
>         Attachments: HBASE-2252.patch
>
>
> Currently TableInputFormat doesn't change the block caching behavior of scans and one of our table grew so big that using the defaults we kill a least one region server per job run (because of GCs even if we have a heap of 7GB). This doesn't scale well, we should set it by default to false.

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