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https://issues.apache.org/jira/browse/HIVE-4439?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13645882#comment-13645882
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Lefty Leverenz commented on HIVE-4439:
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Removed hive.mapjoin.cache.numrows from the wiki
([https://cwiki.apache.org/confluence/display/Hive/Configuration+Properties]).
No need to wait until release 0.12, since it's unused now.
> Remove unused join configuration parameter: hive.mapjoin.cache.numrows
> ----------------------------------------------------------------------
>
> Key: HIVE-4439
> URL: https://issues.apache.org/jira/browse/HIVE-4439
> Project: Hive
> Issue Type: Bug
> Reporter: Gunther Hagleitner
> Assignee: Gunther Hagleitner
> Fix For: 0.12.0
>
> Attachments: HIVE-4439.1.patch
>
>
> The description says:
> "How many rows should be cached by jdbm for map join."
> I can't find any reference to that parameter in the code however.
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