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From "James (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (HADOOP-9196) Modify BloomFilter read() and write() to address memory concerns
Date Fri, 18 Jan 2013 00:46:13 GMT

    [ https://issues.apache.org/jira/browse/HADOOP-9196?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13556818#comment-13556818
] 

James commented on HADOOP-9196:
-------------------------------

Sounds perfect, good thinking!
                
> Modify BloomFilter read() and write() to address memory concerns
> ----------------------------------------------------------------
>
>                 Key: HADOOP-9196
>                 URL: https://issues.apache.org/jira/browse/HADOOP-9196
>             Project: Hadoop Common
>          Issue Type: Improvement
>            Reporter: James
>            Priority: Minor
>
> It appears that org.apache.hadoop.util.bloom.BloomFilter's write() method creates a byte
array large enough to fit the entire bit vector into memory during serialization.  This is
unnecessary and may cause out of memory issues if the bit vector is sufficiently large and
memory is tight.   

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