[jira] [Assigned] (PHOENIX-6967) Empty cell generation in PostdDDLMutationPlan is executed serially

["Istvan Toth (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/PHOENIX-6967?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Istvan Toth reassigned PHOENIX-6967:
------------------------------------

    Assignee:     (was: Istvan Toth)

> Empty cell generation in PostdDDLMutationPlan is executed serially
> ------------------------------------------------------------------
>
>                 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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