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https://issues.apache.org/jira/browse/IMPALA-11808?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Sai Hemanth Gantasala resolved IMPALA-11808.
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Resolution: Fixed
Resolving this Jira as the patch has been merged to master branch.
> Improve catalogD cache performance in a multi service environment for a
> refresh/invalidate query
> ------------------------------------------------------------------------------------------------
>
> Key: IMPALA-11808
> URL: https://issues.apache.org/jira/browse/IMPALA-11808
> Project: IMPALA
> Issue Type: Improvement
> Components: Catalog
> Reporter: Sai Hemanth Gantasala
> Assignee: Sai Hemanth Gantasala
> Priority: Major
>
> Improve catalogD cache performance in a multi-service environment for a
> refresh/invalidate query.
> This patch supports a new event called reload event in catalogD. This event
> is used to update table/file metadata for a refresh or invalidate command in
> other replicas of catalogDs when one of the replicas issues a
> refresh/invalidate command. HIVE-26838 is the Hive jira that adds support for
> this reload event. This feature is disabled by default using a config
> enable_reload_events. To use this feature set this config to true and impala
> will be able to fire reload events. The processing of reload events in the
> event processor is always enabled. There is an end-to-end test added for this
> feature which currently checks the firing/creation of the reload event and
> self-event check in the event processor. There is also an end-to-end test
> that tests this reload event in the event processor.
> There is also a follow-up jira
> [IMPALA-11822|http://issues.apache.org/jira/browse/IMPALA-11822] to track the
> optimization patch for this feature.
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