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https://issues.apache.org/jira/browse/HIVE-24806?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Rajesh Balamohan reassigned HIVE-24806:
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Assignee: Rajesh Balamohan
> Compactor: Initiator should lazy evaluate findUserToRunAs()
> -----------------------------------------------------------
>
> Key: HIVE-24806
> URL: https://issues.apache.org/jira/browse/HIVE-24806
> Project: Hive
> Issue Type: Improvement
> Reporter: Rajesh Balamohan
> Assignee: Rajesh Balamohan
> Priority: Major
> Labels: pull-request-available
> Time Spent: 0.5h
> Remaining Estimate: 0h
>
> https://github.com/apache/hive/blob/64bb52316f19426ebea0087ee15e282cbde1d852/ql/src/java/org/apache/hadoop/hive/ql/txn/compactor/Initiator.java#L232
> {noformat}
> cache.putIfAbsent(fullTableName, findUserToRunAs(sd.getLocation(), t));
> {noformat}
> This ends up evaluating findUserToRunAs() everytime, and looks up from
> FileSystem on every call (thousands of times in large database).
> This can be lazy initialized instead (e.g computeIfAbsent);
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