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https://issues.apache.org/jira/browse/HIVE-15300?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Rajesh Balamohan updated HIVE-15300:
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Attachment: HIVE-15300.4.patch
Rebasing the patch with minor fixes. This is mainly for ObjectStore. If
CachedStore is used, getTable wouldn't be expensive.
> Reuse table information in SemanticAnalyzer::getMetaData to reduce
> compilation time
> -----------------------------------------------------------------------------------
>
> Key: HIVE-15300
> URL: https://issues.apache.org/jira/browse/HIVE-15300
> Project: Hive
> Issue Type: Improvement
> Components: Parser
> Reporter: Rajesh Balamohan
> Assignee: Rajesh Balamohan
> Priority: Minor
> Attachments: HIVE-15300.1.patch, HIVE-15300.2.patch,
> HIVE-15300.3.patch, HIVE-15300.4.patch
>
>
> E.g Q88 in tpc-ds takes lots of time to compile and it ends up getting the
> table details for the same table repeatedly. It took 20+seconds to compile
> the query.
> It would be good to reuse the table information in
> SemanticAnalyzer::getMetadata.
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