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https://issues.apache.org/jira/browse/HIVE-16746?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Rajesh Balamohan updated HIVE-16746:
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Status: Patch Available (was: Open)
> Reduce number of index lookups for same table in IndexWhereTaskDispatcher
> -------------------------------------------------------------------------
>
> Key: HIVE-16746
> URL: https://issues.apache.org/jira/browse/HIVE-16746
> Project: Hive
> Issue Type: Bug
> Reporter: Rajesh Balamohan
> Priority: Minor
> Attachments: HIVE-16746.1.patch
>
>
> {{IndexWhereTaskDispatcher}} is used when
> {{hive.optimize.index.filter=true}}. It lists all indices for the table and
> depending on the query complexity, this ends up being in the hotpath. For
> e.g, Q14 explain plan takes 180-200 seconds and this index querying multiple
> times for same tables take up 30-40 seconds. This function was invoked around
> 24000 times for same set of tables.
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