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Posted to dev@crunch.apache.org by "Josh Wills (JIRA)" <ji...@apache.org> on 2013/06/29 03:18:24 UTC

[jira] [Updated] (CRUNCH-230) Attempt to estimate HBase table sizes when we're given a trivial Scan object

     [ https://issues.apache.org/jira/browse/CRUNCH-230?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Josh Wills updated CRUNCH-230:
------------------------------

    Attachment: CRUNCH-230.patch

The patch.
                
> Attempt to estimate HBase table sizes when we're given a trivial Scan object
> ----------------------------------------------------------------------------
>
>                 Key: CRUNCH-230
>                 URL: https://issues.apache.org/jira/browse/CRUNCH-230
>             Project: Crunch
>          Issue Type: Improvement
>          Components: IO
>    Affects Versions: 0.6.0
>            Reporter: Josh Wills
>            Priority: Minor
>         Attachments: CRUNCH-230.patch
>
>
> If we're asked to do a scan of an entire HBase table, we can actually do a pretty good job of estimating how large it is by looking up its directory in HDFS. This patch checks the input scan given to the HBaseSourceTarget, and if it doesn't specify any filters, looks up the size of the input table on HDFS.

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