Hello Kudu Jenkins,

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

    http://gerrit.cloudera.org:8080/3952

to look at the new patch set (#19).

Change subject: KUDU-456 Implement AUTO_FLUSH_BACKGROUND flush mode
......................................................................

KUDU-456 Implement AUTO_FLUSH_BACKGROUND flush mode

Implemented AUTO_FLUSH_BACKGROUND for the Kudu C++ client library.
In AUTO_FLUSH_BACKGROUND mode,
the KuduSession::Apply() method blocks if total amount of data
for pending operations reaches the buffer size limit.  The limit
on the buffer size can be set by the
KuduSession::SetMutationBufferSpace() method.

The background flush logic checks whether at least one of the
following two conditions is satisfied to determine whether it's time
to flush the accumulated write operations:
  * The over-the-watermark criterion: check whether the total size of the
    freshly submitted (i.e. not-yet-scheduled-for-flush) write operations
    is over the threshold.  The threshold can be set as a percentage
    of the total buffer size using the
    KuduSession::SetMutationBufferFlushWatermark() method.
  * The maximum wait time criterion: check whether the current batch
    of operations has been accumulating for more than the maximum
    wait time.  The maximum wait time can be specified in milliseconds
    using the KuduSession::SetMutationBufferFlushInterva() method.
    A KuduSession object uses RPC messenger's thread pool to monitor
    batches' maximum wait time.

This change also addresses the following JIRA issue:
  KUDU-1376 KuduSession::SetMutationBufferSpace is not defined

Change-Id: I34905c30b3aad96f53cf7a1822b1cde6d25f33a8
---
M python/kudu/tests/test_client.py
M src/kudu/client/batcher.cc
M src/kudu/client/batcher.h
M src/kudu/client/client-internal.h
M src/kudu/client/client-test.cc
M src/kudu/client/client.cc
M src/kudu/client/client.h
M src/kudu/client/session-internal.cc
M src/kudu/client/session-internal.h
M src/kudu/client/write_op.cc
M src/kudu/client/write_op.h
11 files changed, 1,184 insertions(+), 171 deletions(-)


  git pull ssh://gerrit.cloudera.org:29418/kudu refs/changes/52/3952/19
-- 
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Gerrit-MessageType: newpatchset
Gerrit-Change-Id: I34905c30b3aad96f53cf7a1822b1cde6d25f33a8
Gerrit-PatchSet: 19
Gerrit-Project: kudu
Gerrit-Branch: master
Gerrit-Owner: Alexey Serbin <aser...@cloudera.com>
Gerrit-Reviewer: Adar Dembo <a...@cloudera.com>
Gerrit-Reviewer: Alexey Serbin <aser...@cloudera.com>
Gerrit-Reviewer: Dan Burkert <d...@cloudera.com>
Gerrit-Reviewer: Kudu Jenkins
Gerrit-Reviewer: Todd Lipcon <t...@apache.org>

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