Adar Dembo has posted comments on this change. ( 
http://gerrit.cloudera.org:8080/10997 )

Change subject: WIP: KUDU-2509 fix use-after-free in case of WAL replay error
......................................................................


Patch Set 2:

(4 comments)

http://gerrit.cloudera.org:8080/#/c/10997/2//COMMIT_MSG
Commit Message:

PS2:
Could you prepare a second version of this patch that's much more targeted, one 
we could more easily backport to older releases?


http://gerrit.cloudera.org:8080/#/c/10997/2/src/kudu/consensus/log_util.cc
File src/kudu/consensus/log_util.cc:

http://gerrit.cloudera.org:8080/#/c/10997/2/src/kudu/consensus/log_util.cc@186
PS2, Line 186:   pending_entries_.front().swap(*entry);
Nit: *entry = std::move(pending_entries_.front())


http://gerrit.cloudera.org:8080/#/c/10997/2/src/kudu/tablet/tablet_bootstrap.cc
File src/kudu/tablet/tablet_bootstrap.cc:

http://gerrit.cloudera.org:8080/#/c/10997/2/src/kudu/tablet/tablet_bootstrap.cc@629
PS2, Line 629:   tablet_.swap(tablet);
Nit: I tend to prefer this style:

  tablet_ = std::move(tablet);

Thoughts?


http://gerrit.cloudera.org:8080/#/c/10997/2/src/kudu/tablet/tablet_bootstrap.cc@891
PS2, Line 891:     entry_ptr->release();
Can you change OpIndexToEntryMap to store unique_ptr<LogEntryPB> for the value 
type? Seems like that would simplify some of this too, though maybe it's not 
possible (i.e. LogEntryPB is actually shared ownership), or maybe it's too big 
of a change.



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Gerrit-Project: kudu
Gerrit-Branch: master
Gerrit-MessageType: comment
Gerrit-Change-Id: I11373b1cc34d9e2e0181bee2d3841b49022218ed
Gerrit-Change-Number: 10997
Gerrit-PatchSet: 2
Gerrit-Owner: Alexey Serbin <aser...@cloudera.com>
Gerrit-Reviewer: Adar Dembo <a...@cloudera.com>
Gerrit-Reviewer: Kudu Jenkins
Gerrit-Reviewer: Mike Percy <mpe...@apache.org>
Gerrit-Reviewer: Tidy Bot
Gerrit-Comment-Date: Fri, 20 Jul 2018 02:52:41 +0000
Gerrit-HasComments: Yes

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