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https://issues.apache.org/jira/browse/IMPALA-12417?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17765797#comment-17765797
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ASF subversion and git services commented on IMPALA-12417:
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Commit 89d95f28d4252d843bce403beea875c1d221dff3 in impala's branch
refs/heads/branch-4.3.0 from Surya Hebbar
[ https://gitbox.apache.org/repos/asf?p=impala.git;h=89d95f28d ]
IMPALA-12417: Fix query timeline issue during asynchronous codegen
When ASYNC_CODEGEN = 1, async code generation is enabled,
this switches the compiled function pointers during runtime.
Hence, enabling codegen to run on a parallel thread.
In this case, a new event sequence is added to each fragment's profile.
These additional events exhaust the default phase's colors available
and disturb the correlation between them.
AsyncCodegen events can be skipped to render the fragment diagram
correctly.
Change-Id: I01b29b869b16a5f2f2e398ac7e937f137614d6fe
Reviewed-on: http://gerrit.cloudera.org:8080/20458
Reviewed-by: Impala Public Jenkins <impala-public-jenk...@cloudera.com>
Tested-by: Impala Public Jenkins <impala-public-jenk...@cloudera.com>
> Query timeline not working when enable asynchronous codegen
> -----------------------------------------------------------
>
> Key: IMPALA-12417
> URL: https://issues.apache.org/jira/browse/IMPALA-12417
> Project: IMPALA
> Issue Type: Bug
> Components: Backend
> Reporter: Ye Zihao
> Assignee: Surya Hebbar
> Priority: Major
> Fix For: Impala 4.3.0
>
> Attachments: jirabug.png, jirabug2.jpeg
>
>
> When set async_codegen=true, the timeline page of the query will be
> unavailable, seemingly because the preset colors did not take into account
> events of asynchronous Codegen.
> !jirabug2.jpeg!
> !jirabug.png!
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