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https://issues.apache.org/jira/browse/IMPALA-13678?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17915962#comment-17915962
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ASF subversion and git services commented on IMPALA-13678:
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Commit c936f95af2b3efef685aee095e4ecfd550472f3c in impala's branch
refs/heads/master from Riza Suminto
[ https://gitbox.apache.org/repos/asf?p=impala.git;h=c936f95af ]
IMPALA-13678: Validate remote_submit_time against coordinator time
Impala with External frontend hit a DCHECK in
RuntimeProfile::EventSequence::Start(int64_t start_time_ns) because
frontend report remote_submit_time that is more than 3ns ahead of
Coordinator time. This can happen if there is a clock skew between
Frontend node and Impala Coordinator node.
This patch fix the issue by taking the minimum between given
remote_submit_time vs Coordinator's MonotonicStopWatch::Now().
Change-Id: If6e04219c515fddff07bfbee43bb93babb3d307b
Reviewed-on: http://gerrit.cloudera.org:8080/22360
Reviewed-by: Impala Public Jenkins <[email protected]>
Tested-by: Impala Public Jenkins <[email protected]>
> Validate remote_submit_time against coordinator time
> ----------------------------------------------------
>
> Key: IMPALA-13678
> URL: https://issues.apache.org/jira/browse/IMPALA-13678
> Project: IMPALA
> Issue Type: Bug
> Components: Backend
> Affects Versions: Impala 4.5.0
> Reporter: Riza Suminto
> Assignee: Riza Suminto
> Priority: Minor
>
> Impala with External frontend hit a DCHECK in
> RuntimeProfile::EventSequence::Start(int64_t start_time_ns) because frontend
> report remote_submit_time that is more than 3ns ahead of Coordinator time.
> This can happen if there is a clock skew between Frontend node and Impala
> Coordinator node.
> Impala Coordinator should validate remote_submit_time against its own clock.
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