Yuqi Du has posted comments on this change. ( 
http://gerrit.cloudera.org:8080/18674 )

Change subject: [threadpool] Fix scheduler thread a coredump bug
......................................................................


Patch Set 36:

(6 comments)

Thanks for your crs.

http://gerrit.cloudera.org:8080/#/c/18674/34/src/kudu/util/threadpool-test.cc
File src/kudu/util/threadpool-test.cc:

http://gerrit.cloudera.org:8080/#/c/18674/34/src/kudu/util/threadpool-test.cc@193
PS34, Line 193: ASSERT_OK(token->Schedule(&IssueTraceStatement, 200));
              :   token->Shutdown();
              :   SleepFor(MonoDelta::FromMilliseconds(500));
> What does it want to provide? Seems not related to the test name, i.e. Thre
ok


http://gerrit.cloudera.org:8080/#/c/18674/34/src/kudu/util/threadpool-test.cc@198
PS34, Line 198: }
> nit: remove it
Done


http://gerrit.cloudera.org:8080/#/c/18674/34/src/kudu/util/threadpool.h
File src/kudu/util/threadpool.h:

http://gerrit.cloudera.org:8080/#/c/18674/34/src/kudu/util/threadpool.h@200
PS34, Line 200: `futur
> nit: future_tasks_ ?
Done


http://gerrit.cloudera.org:8080/#/c/18674/34/src/kudu/util/threadpool.h@203
PS34, Line 203: Tasks order by their execute timepoint. The `thread_` would e
> how about some like: Tasks by their earliest execute time. Tasks will execu
I can change the comment.
Although what you said is nearly fact, but I think origin intention is better.


http://gerrit.cloudera.org:8080/#/c/18674/34/src/kudu/util/threadpool.cc
File src/kudu/util/threadpool.cc:

http://gerrit.cloudera.org:8080/#/c/18674/34/src/kudu/util/threadpool.cc@154
PS34, Line 154:       while (token != nullptr) {
> IMO, token is possible to be a wild pointer, isn't it?
Yes.

So need notice usage.

1. thread_pool shutdown then the thread join.
2. token shutdown and release.
3. release thread_pool


http://gerrit.cloudera.org:8080/#/c/18674/34/src/kudu/util/threadpool.cc@168
PS34, Line 168: G(1) << Substitute("threadpool token Submit status: $0, retry t
> I'm not sure what does it mean, could you please explain more about it?
remove it.



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Gerrit-Project: kudu
Gerrit-Branch: master
Gerrit-MessageType: comment
Gerrit-Change-Id: Ie5bc5511a745f3dc12dfe1a6a1813ece41ccc2a8
Gerrit-Change-Number: 18674
Gerrit-PatchSet: 36
Gerrit-Owner: Yuqi Du <[email protected]>
Gerrit-Reviewer: Alexey Serbin <[email protected]>
Gerrit-Reviewer: Kudu Jenkins (120)
Gerrit-Reviewer: Tidy Bot (241)
Gerrit-Reviewer: Yingchun Lai <[email protected]>
Gerrit-Reviewer: Yuqi Du <[email protected]>
Gerrit-Comment-Date: Wed, 20 Jul 2022 04:20:35 +0000
Gerrit-HasComments: Yes

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