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From "Nicolas Spiegelberg (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HBASE-1200) Add bloomfilters
Date Wed, 12 May 2010 18:54:45 GMT

    [ https://issues.apache.org/jira/browse/HBASE-1200?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12866685#action_12866685
] 

Nicolas Spiegelberg commented on HBASE-1200:
--------------------------------------------

Sorry.  Patch n00b.  I did  svn mv src/java/org/apache/hadoop/hbase/io/HalfHFileReader.java
src/java/org/apache/hadoop/hbase/io/HalfStoreFileReader.java & apparently that doesn't
reflect well in my svn diff output.  This worked for me, but may not be the kosher way to
do it:
{{
svn cp src/java/org/apache/hadoop/hbase/io/HalfHFileReader.java src/java/org/apache/hadoop/hbase/io/HalfStoreFileReader.java
patch -p0 < HBASE-1200-0.20.5-4.patch
svn rm src/java/org/apache/hadoop/hbase/io/HalfHFileReader.java
}}

> 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-1200-0.20.5-4.patch,
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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