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https://issues.apache.org/jira/browse/HIVE-1702?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Liyin Tang resolved HIVE-1702.
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Resolution: Won't Fix
Release Note: JDBM will be removed from Hive
> optimize JDBM to make mapjoin faster
> ------------------------------------
>
> Key: HIVE-1702
> URL: https://issues.apache.org/jira/browse/HIVE-1702
> Project: Hive
> Issue Type: Improvement
> Components: Query Processor
> Reporter: Namit Jain
> Assignee: Liyin Tang
>
> Htree.get() cost 70% total time. It could help a lot if there is bloom filter
> here to avoid unneeded get() if we know for sure the given key is not in
> JDBM. (we can generate the bloom filter when doing the jdbm sink, and read
> into memory when doing read. )
> Copied from https://issues.apache.org/jira/browse/HIVE-1700
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