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https://issues.apache.org/jira/browse/IMPALA-9180?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16979529#comment-16979529
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Fang-Yu Rao commented on IMPALA-9180:
-------------------------------------

Thanks [~kwho]!

I am currently working on https://issues.apache.org/jira/browse/IMPALA-9154, a 
deadlock that occurs when the Coordinator is propagating an  aggregated filter 
on a cluster with a very limited number of threads in its thread pool.

One potential solution is to make 
[https://github.com/apache/impala/blob/master/be/src/runtime/coordinator.cc#L1094]
 an asynchronous call so that the calling thread could be freed and thus there 
will be available threads to answer this RPC.

 

> Remove legacy ImpalaInternalService
> -----------------------------------
>
>                 Key: IMPALA-9180
>                 URL: https://issues.apache.org/jira/browse/IMPALA-9180
>             Project: IMPALA
>          Issue Type: Improvement
>          Components: Backend
>    Affects Versions: Impala 3.4.0
>            Reporter: Michael Ho
>            Assignee: Fang-Yu Rao
>            Priority: Minor
>
> Now that IMPALA-7984 is done, the legacy Thrift based Impala internal service 
> can now be removed. The port 22000 can also be freed up. In addition to code 
> change, the doc probably needs to be updated to reflect the fact that 22000 
> is no longer in use.



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