Michael Smith has posted comments on this change. ( 
http://gerrit.cloudera.org:8080/20179 )

Change subject: IMPALA-12233: Fixed PHJ hanging caused by cyclic barrier
......................................................................


Patch Set 4:

(1 comment)

http://gerrit.cloudera.org:8080/#/c/20179/4/be/src/exec/partitioned-hash-join-node.cc
File be/src/exec/partitioned-hash-join-node.cc:

http://gerrit.cloudera.org:8080/#/c/20179/4/be/src/exec/partitioned-hash-join-node.cc@289
PS4, Line 289:   if (builder_ && builder_->probe_barrier()) 
builder_->probe_barrier()->Unregister();
> I guess the number of remaining transitions for other threads could be unpr
nit: it might be a little safer to unregister after other builder_ operations 
(lines 303-311) to avoid breakage in the future. Is there some reason to do it 
earlier?



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Gerrit-Project: Impala-ASF
Gerrit-Branch: master
Gerrit-MessageType: comment
Gerrit-Change-Id: I8be75c7ce99c015964c8bbb547539e6619ba4f9b
Gerrit-Change-Number: 20179
Gerrit-PatchSet: 4
Gerrit-Owner: Gergely Fürnstáhl <[email protected]>
Gerrit-Reviewer: Impala Public Jenkins <[email protected]>
Gerrit-Reviewer: Joe McDonnell <[email protected]>
Gerrit-Reviewer: Michael Smith <[email protected]>
Gerrit-Comment-Date: Thu, 13 Jul 2023 18:06:48 +0000
Gerrit-HasComments: Yes

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