Hello Adar Dembo,

I'd like you to do a code review.  Please visit

    http://gerrit.cloudera.org:8080/6855

to review the following change.

Change subject: log: fix some incorrect assumptions on BlockingQueue shutdown
......................................................................

log: fix some incorrect assumptions on BlockingQueue shutdown

There was an incorrect comment in the Log::AppendThread body in which it
claimed that BlockingQueue::Drain would potentially return false and
also return elements at the same time.

This was in fact not the case. This patch adds unit tests to verify
the actual behavior, and simplifies the code accordingly.

Change-Id: I43e1304ce242f2def26a29504b76bb3e74a93ca3
---
M src/kudu/consensus/log.cc
M src/kudu/util/blocking_queue-test.cc
M src/kudu/util/blocking_queue.h
3 files changed, 35 insertions(+), 10 deletions(-)


  git pull ssh://gerrit.cloudera.org:29418/kudu refs/changes/55/6855/1
-- 
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Gerrit-MessageType: newchange
Gerrit-Change-Id: I43e1304ce242f2def26a29504b76bb3e74a93ca3
Gerrit-PatchSet: 1
Gerrit-Project: kudu
Gerrit-Branch: master
Gerrit-Owner: Todd Lipcon <t...@apache.org>
Gerrit-Reviewer: Adar Dembo <a...@cloudera.com>

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