Michael Ho has posted comments on this change. ( http://gerrit.cloudera.org:8080/10855 )
Change subject: IMPALA-7213, IMPALA-7241: Port ReportExecStatus() RPC to use KRPC ...................................................................... Patch Set 10: (2 comments) http://gerrit.cloudera.org:8080/#/c/10855/10/be/src/runtime/coordinator-backend-state.cc File be/src/runtime/coordinator-backend-state.cc: http://gerrit.cloudera.org:8080/#/c/10855/10/be/src/runtime/coordinator-backend-state.cc@265 PS10, Line 265: DCHECK(!instance_stats->done_ || : report_version == instance_stats->last_report_version_); > isn't it possible (though unlikely) that you have some old report sitting i Yup. That's actually a DCHECK which Sailesh ran into when testing IMPALA-4063. Removed in patch 11. http://gerrit.cloudera.org:8080/#/c/10855/10/be/src/runtime/query-state.cc File be/src/runtime/query-state.cc: http://gerrit.cloudera.org:8080/#/c/10855/10/be/src/runtime/query-state.cc@287 PS10, Line 287: ReportVersion > if I understand the threading correctly, there are two entry points for sen To answer the question about your second race, I think it's impossible today because we explicitly turn off the reporting thread before sending the final profile (https://github.com/apache/impala/blob/master/be/src/runtime/fragment-instance-state.cc#L479-L496) The first race is also kind of impossible today because we wait for the report thread to exit before sending the final report but yes, it's possible that the RPC in the report thread fails somehow and we just drop those error statuses on the floor. -- To view, visit http://gerrit.cloudera.org:8080/10855 To unsubscribe, visit http://gerrit.cloudera.org:8080/settings Gerrit-Project: Impala-ASF Gerrit-Branch: master Gerrit-MessageType: comment Gerrit-Change-Id: I7638583b433dcac066b87198e448743d90415ebe Gerrit-Change-Number: 10855 Gerrit-PatchSet: 10 Gerrit-Owner: Michael Ho <k...@cloudera.com> Gerrit-Reviewer: Dan Hecht <dhe...@cloudera.com> Gerrit-Reviewer: Impala Public Jenkins <impala-public-jenk...@cloudera.com> Gerrit-Reviewer: Michael Ho <k...@cloudera.com> Gerrit-Reviewer: Sailesh Mukil <sail...@cloudera.com> Gerrit-Reviewer: Todd Lipcon <t...@apache.org> Gerrit-Comment-Date: Wed, 22 Aug 2018 01:58:29 +0000 Gerrit-HasComments: Yes
