Dan Hecht has posted comments on this change.

Change subject: IMPALA-4631: avoid DCHECK in PlanFragementExecutor::Close().
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Patch Set 1:

(4 comments)

http://gerrit.cloudera.org:8080/#/c/6375/1//COMMIT_MSG
Commit Message:

PS1, Line 9: 1
> Or should we just skip this DCHECK altogether in a EC2 VM ?
We don't know for sure it is dependent on EC2 VMs, and EC2 is where we get the 
bulk of our testing during development so I'd like to leave it. And it would be 
good to know if the new dcheck ever fires.


PS1, Line 11: CLOCK_MONOTONICs_COARSE
> CLOCK_MONOTONIC_COARSE
Done


PS1, Line 14: losen
> loosen ?
Done


http://gerrit.cloudera.org:8080/#/c/6375/1/be/src/runtime/plan-fragment-executor.cc
File be/src/runtime/plan-fragment-executor.cc:

Line 516:   // TODO: IMPALA-4631: Occasionally we see other_time = total_time + 
1 for some reason
> consider logging so we can start identifying trends when this happens
without instrumenting the scoped timer code itself (which I'll probably do but 
as a private build), I don't think we can get more info than we already have 
from the core files, so I think I'll avoid adding more logging.


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Gerrit-MessageType: comment
Gerrit-Change-Id: Ia9883fdb1be6a4301864da85da56ec96f4dafbe7
Gerrit-PatchSet: 1
Gerrit-Project: Impala-ASF
Gerrit-Branch: master
Gerrit-Owner: Dan Hecht <[email protected]>
Gerrit-Reviewer: Dan Hecht <[email protected]>
Gerrit-Reviewer: Matthew Jacobs <[email protected]>
Gerrit-Reviewer: Michael Ho <[email protected]>
Gerrit-HasComments: Yes

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