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From "Andrzej Bialecki (JIRA)" <j...@apache.org>
Subject [jira] Commented: (HBASE-552) Bloom filter bugs
Date Thu, 28 Aug 2008 17:48:45 GMT

    [ https://issues.apache.org/jira/browse/HBASE-552?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12626666#action_12626666
] 

Andrzej Bialecki  commented on HBASE-552:
-----------------------------------------

Yes - the linked issue HADOOP-3063 uses DynamicBloomFilter to maintain a filter for a MapFile.
Maintaining a dynamic filter costs less than calculating a filter once the MapFile is closed.
Also, with the recently added ability to append to files you will be able to append to a MapFile,
and then you would have to recalculate the whole filter - instead, if we use DynamicBloomFilter
we will be able to update it.

> Bloom filter bugs
> -----------------
>
>                 Key: HBASE-552
>                 URL: https://issues.apache.org/jira/browse/HBASE-552
>             Project: Hadoop HBase
>          Issue Type: Bug
>    Affects Versions: 0.1.0
>            Reporter: Andrzej Bialecki 
>             Fix For: 0.1.1
>
>         Attachments: bloom.patch
>
>
> There are some bugs in Bloom filters in the code that deals with initialization and (de)serialization.

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