ASF GitHub Bot commented on ARROW-2458:

pitrou commented on issue #1893: ARROW-2458: [Plasma] Use one thread pool per 
URL: https://github.com/apache/arrow/pull/1893#issuecomment-381315217
   Is there a risk of excessive resource consumption if there are several 
plasma clients around? I see that the thread pool is used for memcpy and 
hashing. I think a single global thread pool with # threads == # number of CPU 
cores would make more sense.

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> [Plasma] PlasmaClient uses global variable
> ------------------------------------------
>                 Key: ARROW-2458
>                 URL: https://issues.apache.org/jira/browse/ARROW-2458
>             Project: Apache Arrow
>          Issue Type: Improvement
>          Components: Plasma (C++)
>    Affects Versions: 0.9.0
>            Reporter: Philipp Moritz
>            Assignee: Philipp Moritz
>            Priority: Major
>              Labels: pull-request-available
> The threadpool threadpool_ that PlasmaClient is using is global at the 
> moment. This prevents us from using multiple PlasmaClients in the same 
> process (one per thread).

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