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https://issues.apache.org/jira/browse/IMPALA-12041?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17709512#comment-17709512
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ASF subversion and git services commented on IMPALA-12041:
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Commit f0b9340983ea65a36c575f04db893881ee48609e in impala's branch
refs/heads/master from Riza Suminto
[ https://gitbox.apache.org/repos/asf?p=impala.git;h=f0b934098 ]
IMPALA-12041: Select first executor group if query not auto-scalable
In multiple executor groups setup, some trivial queries like "select 1;"
fail admission with "No mapping found for request" error message. This
patch fixes a bug where the Frontend does not set group name prefix when
query is not auto-scalable. In cases like trivial query run, correct
executor group name prefix is still needed for backend to correctly
resolve the target pool.
Testing:
- Pass test_executor_groups.py
Change-Id: I89497c8f67bfd176c2b60fa1b70fe53f905bbab0
Reviewed-on: http://gerrit.cloudera.org:8080/19691
Reviewed-by: Impala Public Jenkins <[email protected]>
Tested-by: Impala Public Jenkins <[email protected]>
> Trivial query fail with "No mapping found for request" error message
> --------------------------------------------------------------------
>
> Key: IMPALA-12041
> URL: https://issues.apache.org/jira/browse/IMPALA-12041
> Project: IMPALA
> Issue Type: Bug
> Components: Frontend
> Affects Versions: Impala 4.2.0
> Reporter: Riza Suminto
> Assignee: Riza Suminto
> Priority: Major
>
> In multiple executor group setup, some trivial query like "select 1;" fail
> admission with "No mapping found for request" error message. Cases in the
> following code does not seem to set group name prefix when they break the
> loop early.
> [https://github.com/apache/impala/blob/cd9f3f578ef1bceeb5c48354fb9d2d6292ff5155/fe/src/main/java/org/apache/impala/service/Frontend.java#L2048-L2059]
>
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