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https://issues.apache.org/jira/browse/PHOENIX-6967?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Istvan Toth updated PHOENIX-6967:
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Summary: Aggregate queries are not properly parallelized (was: Empty cell
generation in PostdDDLMutationPlan is executed serially)
> Aggregate queries are not properly parallelized
> -----------------------------------------------
>
> Key: PHOENIX-6967
> URL: https://issues.apache.org/jira/browse/PHOENIX-6967
> Project: Phoenix
> Issue Type: Bug
> Components: core
> Affects Versions: 5.2.0, 5.1.3
> Reporter: Istvan Toth
> Priority: Major
>
> The empty CQ generation after create table is not run in parallel.
> At first, I can see the reads and writes on happening on each region, but
> after a minute or so, only one region is processed at a time in ascending
> order.
> My guess is that it has something to do with keepalive/chunked results not
> being processed on the client side correctly.
> I also suspect that this is not really specific to PostDDLMutationPlan, and
> all queries where a single chunk takes a lot of time would be affected.
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