[Impala-ASF-CR] IMPALA-3882: Simplify some query exec state locking

["Henry Robinson (Code Review)" <ge...@cloudera.org>]

Henry Robinson has posted comments on this change.

Change subject: IMPALA-3882: Simplify some query exec state locking
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Patch Set 6:

(1 comment)

Abandoned this for now: Sailesh's comment lead me down a rat hole that I don't have time to address at the moment. We should pick this back up soon though, since the cascading locking can cause problems.

http://gerrit.cloudera.org:8080/#/c/4935/6/be/src/service/impala-beeswax-server.cc
File be/src/service/impala-beeswax-server.cc:

Line 40: using namespace strings;
> This shouldn't be needed, we have 'using strings::Substitute' in names.h no
Done


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Gerrit-MessageType: comment
Gerrit-Change-Id: I516357d2b5e9eb83e8209872cbe4c078c778a629
Gerrit-PatchSet: 6
Gerrit-Project: Impala-ASF
Gerrit-Branch: master
Gerrit-Owner: Henry Robinson <he...@cloudera.com>
Gerrit-Reviewer: Henry Robinson <he...@cloudera.com>
Gerrit-Reviewer: Sailesh Mukil <sa...@cloudera.com>
Gerrit-Reviewer: Tim Armstrong <ta...@cloudera.com>
Gerrit-HasComments: Yes