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Posted to dev@hbase.apache.org by "Jean-Daniel Cryans (JIRA)" <ji...@apache.org> on 2009/10/09 23:07:31 UTC

[jira] Updated: (HBASE-1899) Use scanner caching in shell count

     [ https://issues.apache.org/jira/browse/HBASE-1899?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Jean-Daniel Cryans updated HBASE-1899:
--------------------------------------

    Attachment: HBASE-1899.patch

Patch that sets the caching at 10. I thought about leaving the user set the value but after some testing it didn't seem to change the speed much and it was more cumbersome to use.

> Use scanner caching in shell count
> ----------------------------------
>
>                 Key: HBASE-1899
>                 URL: https://issues.apache.org/jira/browse/HBASE-1899
>             Project: Hadoop HBase
>          Issue Type: Improvement
>            Reporter: Jean-Daniel Cryans
>            Assignee: Jean-Daniel Cryans
>            Priority: Minor
>             Fix For: 0.20.2, 0.21.0
>
>         Attachments: HBASE-1899.patch
>
>
> Since the shell count now uses the FirstKeyOnlyFilter, it's safe to combine it with scanner caching for huge count speedups.

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