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https://issues.apache.org/jira/browse/HADOOP-9196?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13556896#comment-13556896
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James commented on HADOOP-9196:
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Yep, that'd be great. Don't forget to add a {{read(DataInput)}} or similar
method so we can make the same fix in BloomFilter's {{readFields(DataInput)}}
method.
I ran benchmarks using test code on my local cluster against HDFS. The code is
nothing fancy but gets the job done. I can run the tests against the new code
when it's done.
> 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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