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https://issues.apache.org/jira/browse/IMPALA-4400?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Tim Armstrong updated IMPALA-4400:
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Labels: multithreading (was: )
> Aggregate runtime filters locally
> ---------------------------------
>
> Key: IMPALA-4400
> URL: https://issues.apache.org/jira/browse/IMPALA-4400
> Project: IMPALA
> Issue Type: Sub-task
> Components: Backend
> Affects Versions: Impala 2.8.0
> Reporter: Marcel Kinard
> Assignee: Tim Armstrong
> Priority: Major
> Labels: multithreading
>
> At the moment, runtime filters are sent from each fragment instance directly
> to the coordinator for aggregation (ORing) at the coordinator.
> With multi-threaded execution, we will have an order of magnitude more
> fragment instances per node, at which point the coordinator would become a
> bottleneck during the aggregation process. To avoid that, we need to
> aggregate the local instances' runtime filters at each node before sending
> the filter off to the coordinator.
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