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https://issues.apache.org/jira/browse/IMPALA-7694?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16775402#comment-16775402
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ASF subversion and git services commented on IMPALA-7694:
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Commit 91d8a8f6280b2b802fe8ccc52251937c5a415766 in impala's branch
refs/heads/master from Lars Volker
[ https://gitbox.apache.org/repos/asf?p=impala.git;h=91d8a8f ]
IMPALA-8234: Fix ordering of Thrift enum, fix enum values, add warning
IMPALA-7694 added a field in the middle of the Metrics.TUnit enum, which
broke backwards compatibility with profiles that had been written by
older versions of Impala. This change fixes the ordering by moving the
field to the end of the enum.
Additionally, it adds a warning to the top of all Thrift files that are
part of the binary profile format, and an note of caution to the main
definition in RuntimeProfile.thrift.
This change also fixes the order of all enums in our Thrift files to
make errors like this less likely in the future.
Change-Id: If215f16a636008757ceb439edbd6900a1be88c59
Reviewed-on: http://gerrit.cloudera.org:8080/12543
Reviewed-by: Impala Public Jenkins <impala-public-jenk...@cloudera.com>
Tested-by: Impala Public Jenkins <impala-public-jenk...@cloudera.com>
> Add CPU resource utilization (user, system, iowait) timelines to profiles
> -------------------------------------------------------------------------
>
> Key: IMPALA-7694
> URL: https://issues.apache.org/jira/browse/IMPALA-7694
> Project: IMPALA
> Issue Type: Improvement
> Components: Backend
> Affects Versions: Impala 3.1.0
> Reporter: Lars Volker
> Assignee: Lars Volker
> Priority: Major
> Labels: observability, supportability
> Fix For: Impala 3.2.0
>
>
> We often struggle to determine why a query was slow, in particular if it was
> caused by other tasks on the same machine using resources. To help with this
> we should include timelines for system resource utilization to the profiles.
> These should eventually include CPU and disk and network I/O. If it is too
> expensive to include these in all queries we should add a flag to add these
> to a percentage of queries, and a query option to force-enable them.
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