Tim Armstrong has posted comments on this change.

Change subject: IMPALA-4383: Ensure plan fragment report thread is always 
started
......................................................................


Patch Set 1:

(1 comment)

http://gerrit.cloudera.org:8080/#/c/4864/1/be/src/runtime/plan-fragment-executor.h
File be/src/runtime/plan-fragment-executor.h:

Line 169:   bool report_thread_active_;  // true if we started the thread
The protocol could do with some documentation - I had to piece it together by 
reading the code.

E.g. - when the report thread starts, it sets 'report_thread_active_' to true 
and signals 'report_thread_started_cv_'. The report thread is shut down by 
setting 'report_thread_active_' to false and signalling 
'stop_report_thread_cv_'.


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Gerrit-MessageType: comment
Gerrit-Change-Id: I5d3cab4cc5245014758e6b70dec7a706a7fa929b
Gerrit-PatchSet: 1
Gerrit-Project: Impala-ASF
Gerrit-Branch: master
Gerrit-Owner: Henry Robinson <[email protected]>
Gerrit-Reviewer: Tim Armstrong <[email protected]>
Gerrit-HasComments: Yes

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