[jira] [Comment Edited] (IMPALA-3902) Multi-threaded query execution

["Tim Armstrong (Jira)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/IMPALA-3902?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16924991#comment-16924991 ] 

Tim Armstrong edited comment on IMPALA-3902 at 9/8/19 10:52 PM:
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-I think https://github.com/apache/impala/blob/master/tests/query_test/test_mt_dop.py covers this-


was (Author: tarmstrong):
I think https://github.com/apache/impala/blob/master/tests/query_test/test_mt_dop.py covers this

> Multi-threaded query execution
> ------------------------------
>
>                 Key: IMPALA-3902
>                 URL: https://issues.apache.org/jira/browse/IMPALA-3902
>             Project: IMPALA
>          Issue Type: Improvement
>          Components: Backend
>    Affects Versions: Impala 2.6.0
>            Reporter: Marcel Kornacker
>            Priority: Minor
>
> Currently, a single query fragment is run in a quasi-single threaded manner on a node: the scanners are run in multiple threads, but all other operators (joins, aggregation) are run in the main thread.
> The goal is to add multi-threaded execution on a single node by running multiple fragment instances (each of which runs in a single thread).



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