[kudu-CR] Add a macro to LOG and return on a non-OK status

["David Ribeiro Alves (Code Review)" <ge...@cloudera.org>]

Hello Kudu Jenkins,

I'd like you to reexamine a change.  Please visit

    http://gerrit.cloudera.org:8080/4927

to look at the new patch set (#3).

Change subject:  Add a macro to LOG and return on a non-OK status
......................................................................

Add a macro to LOG and return on a non-OK status

We often see the following pattern:

Status s = someOperation();

if (!s.ok()) {
  LOG(ERROR) << "A critical error occurred at blah. Status: " << s.ToString();
  return s;
}

This is cumbersome. This macro allows to do the same the following way:

RETURN_NOT_OK_LOG(ERROR, someOperation(), "A critical error occurred at blah.");

The macro also prints the status (though at the beginning of the
message and not at the end so that we can have arbirarily long
debugging information but the status is easy to find).

Change-Id: Ibb906e7240d7a289a7822444bc9cbf748a555efb
---
M src/kudu/util/status.h
1 file changed, 10 insertions(+), 0 deletions(-)


  git pull ssh://gerrit.cloudera.org:29418/kudu refs/changes/27/4927/3
-- 
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Gerrit-MessageType: newpatchset
Gerrit-Change-Id: Ibb906e7240d7a289a7822444bc9cbf748a555efb
Gerrit-PatchSet: 3
Gerrit-Project: kudu
Gerrit-Branch: master
Gerrit-Owner: David Ribeiro Alves <dr...@apache.org>
Gerrit-Reviewer: Alexey Serbin <as...@cloudera.com>
Gerrit-Reviewer: David Ribeiro Alves <dr...@apache.org>
Gerrit-Reviewer: Kudu Jenkins
Gerrit-Reviewer: Todd Lipcon <to...@apache.org>