Tim Armstrong has posted comments on this change. ( 
http://gerrit.cloudera.org:8080/10058 )

Change subject: IMPALA-6847: work around high memory estimates for AC
......................................................................


Patch Set 11:

(6 comments)

Here's the new simplified version that just changes the estimate sent from the 
frontend to backend.

http://gerrit.cloudera.org:8080/#/c/10058/8/be/src/scheduling/query-schedule.cc
File be/src/scheduling/query-schedule.cc:

http://gerrit.cloudera.org:8080/#/c/10058/8/be/src/scheduling/query-schedule.cc@194
PS8, Line 194:     DCHECK(request_.__isset.per_host_mem_estimate);
> Could you add a comment here about this case, maybe something like:
Reverted this part of the change.


http://gerrit.cloudera.org:8080/#/c/10058/8/common/thrift/Frontend.thrift
File common/thrift/Frontend.thrift:

http://gerrit.cloudera.org:8080/#/c/10058/8/common/thrift/Frontend.thrift@414
PS8, Line 414:
             : enum TCatalo
> garbled
This is no longer needed for the latest patch.


http://gerrit.cloudera.org:8080/#/c/10058/8/common/thrift/ImpalaInternalService.thrift
File common/thrift/ImpalaInternalService.thrift:

http://gerrit.cloudera.org:8080/#/c/10058/8/common/thrift/ImpalaInternalService.thrift@283
PS8, Line 283: enabled, i.
> maybe delete that, since it can be set for the pool or globally (which then
Done


http://gerrit.cloudera.org:8080/#/c/10058/8/common/thrift/ImpalaInternalService.thrift@285
PS8, Line 285: ISSION,
             :   // planner memory estimate) is used for admission control 
purposes. This provides a
> this seems a bit ambiguous. Protection from what? From not being admitted,
Removed since it no longer applies to latest patch.


http://gerrit.cloudera.org:8080/#/c/10058/8/common/thrift/ImpalaInternalService.thrift@441
PS8, Line 441: ms {
> resolving?
This field is no longer needed with the new code.


http://gerrit.cloudera.org:8080/#/c/10058/8/common/thrift/ImpalaService.thrift
File common/thrift/ImpalaService.thrift:

http://gerrit.cloudera.org:8080/#/c/10058/8/common/thrift/ImpalaService.thrift@295
PS8, Line 295: _MEM_ESTIMATE_FOR_ADMISSION,
> let's copy that to the other place
I just added a reference to the other place where the test is. Maintaining two 
identical comments seems pointless.



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Gerrit-Project: Impala-ASF
Gerrit-Branch: master
Gerrit-MessageType: comment
Gerrit-Change-Id: Ia5fc32a507ad0f00f564dfe4f954a829ac55d14e
Gerrit-Change-Number: 10058
Gerrit-PatchSet: 11
Gerrit-Owner: Tim Armstrong <tarmstr...@cloudera.com>
Gerrit-Reviewer: Bikramjeet Vig <bikramjeet....@cloudera.com>
Gerrit-Reviewer: Dan Hecht <dhe...@cloudera.com>
Gerrit-Reviewer: Philip Zeyliger <phi...@cloudera.com>
Gerrit-Reviewer: Tim Armstrong <tarmstr...@cloudera.com>
Gerrit-Comment-Date: Tue, 17 Apr 2018 00:33:31 +0000
Gerrit-HasComments: Yes

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