You are viewing a plain text version of this content. The canonical link for it is here.

Posted to dev@hive.apache.org by "Liyin Tang (JIRA)" <ji...@apache.org> on 2010/11/02 03:17:25 UTC

[jira] Resolved: (HIVE-1702) optimize JDBM to make mapjoin faster

     [ https://issues.apache.org/jira/browse/HIVE-1702?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Liyin Tang resolved HIVE-1702.
------------------------------

      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

-- 
This message is automatically generated by JIRA.
-
You can reply to this email to add a comment to the issue online.