[jira] Commented: (HBASE-1200) Add bloomfilters

["stack (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/HBASE-1200?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12865349#action_12865349 ] 

stack commented on HBASE-1200:
------------------------------

I added v2 to http://review.hbase.org/r/47/ so we can startup review (though it had the two rejects and doesn't yet compile)

> Add bloomfilters
> ----------------
>
>                 Key: HBASE-1200
>                 URL: https://issues.apache.org/jira/browse/HBASE-1200
>             Project: Hadoop HBase
>          Issue Type: Task
>    Affects Versions: 0.20.5
>            Reporter: stack
>            Assignee: Nicolas Spiegelberg
>             Fix For: 0.20.5
>
>         Attachments: Bloom Filters in HBase.docx, Bloom_Filters_in_HBase.pdf, HBASE-1200-0.20.5.patch, hbase-1200-0.20branch-v2.txt, ryan_bloomfilter.patch, Store.java.rej, StoreScanner.java.rej
>
>
> Add bloomfiltering to hfile.  Can be enabled on a family-level basis.  Ability to configure a row vs row+col level bloom.  We size the bloomfilter with the number of entries we are about to flush which seems like usually we'd be making a filter too big, so our implementation needs to take that into account.

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