Henry Robinson has posted comments on this change.

Change subject: IMPALA-3610: Account for memory used by filters in the 
coordinator
......................................................................


Patch Set 13:

(12 comments)

Mostly style comments, but one question about disabling broadcast joins too 
early.

http://gerrit.cloudera.org:8080/#/c/4066/13//COMMIT_MSG
Commit Message:

PS13, Line 30: Done
Comment is out of date.


http://gerrit.cloudera.org:8080/#/c/4066/12/be/src/runtime/coordinator.cc
File be/src/runtime/coordinator.cc:

PS12, Line 272: boost
remove boost::


PS12, Line 275: std
remove std::


PS12, Line 296: std
remove std::


PS12, Line 299: boost
remove boost::


PS12, Line 313: local
local?


Line 324: 
remove blank line


PS12, Line 369: // This may be NULL while executing UDFs.
              :   if (filter_mem_tracker_.get() != nullptr) {
              :     filter_mem_tracker_->UnregisterFromParent();
              :   }
Why not do this in TearDown()?


Line 2074:     DCHECK(state->disabled() || state->pending_count() == 0);
This just DCHECKS the previous line (except covering the case where 
pending_count() < 0). Is it really necessary?


PS12, Line 2091: 
filter_mem_tracker_->Release(aggregated_filter->directory.size());
nit: shouldn't you release *after* the swap()? Won't make any difference in 
practice.


PS12, Line 2100: Disable
Doesn't this mean that every filter eventually gets a 'true' in its Disabled 
column? That won't help us understand which filters really did get disabled for 
real reasons.


PS12, Line 2133: Disable(coord->filter_mem_tracker_.get());
not clear - is this branch only taken if the filter is partitioned only? 
Otherwise one OOM for a broadcast filter will mean disabling it permanently.


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Gerrit-MessageType: comment
Gerrit-Change-Id: I3c52c8a1c2e79ef370c77bf264885fc859678d1b
Gerrit-PatchSet: 13
Gerrit-Project: Impala-ASF
Gerrit-Branch: master
Gerrit-Owner: Henry Robinson <he...@cloudera.com>
Gerrit-Reviewer: Dan Hecht <dhe...@cloudera.com>
Gerrit-Reviewer: Henry Robinson <he...@cloudera.com>
Gerrit-Reviewer: Marcel Kornacker <mar...@cloudera.com>
Gerrit-Reviewer: Sailesh Mukil <sail...@cloudera.com>
Gerrit-Reviewer: Tim Armstrong <tarmstr...@cloudera.com>
Gerrit-HasComments: Yes

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