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https://issues.apache.org/jira/browse/HBASE-2824?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12990622#comment-12990622
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Andrew Purtell commented on HBASE-2824:
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Sure, +1. Will commit if tests pass.
IIRC, there was some recent discussion up on user@hbase where someone was
asking for something similar.
> Add a filter that randomly included rows based on a configured chance.
> ----------------------------------------------------------------------
>
> Key: HBASE-2824
> URL: https://issues.apache.org/jira/browse/HBASE-2824
> Project: HBase
> Issue Type: New Feature
> Components: filters
> Reporter: Ferdy
> Priority: Minor
> Attachments: HBASE-2824-v1.patch, HBASE-2824-v2.patch
>
>
> We needed a filter that allows us to randomly include rows. I will attach a
> patch with a simple Filter that is able to do this.
> For example, if you wish to do a scan but only want 1/4 of all values
> (randomly distributed), you can use: new RandomRowFilter(0.25f)
> I just wanted to share this Filter with you. It's up to you if you want to
> include it in the codebase.
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