Hello Kudu Jenkins,

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


to look at the new patch set (#9).

Change subject: Add a ResultTracker class that will track server side results

Add a ResultTracker class that will track server side results

This adds the initial version of the ResultTracker class that will be
responsible for tracking responses when we want exactly once call semantics.

While this is minimally working, i.e it's able to track responses and
can be used for exactly once semantics, it's not complete. Future patches
will address the missing functionality.
Still missing are:
- Time based client state cleaning.
- Watermark based per client state cleaning.

I initially had a unit test for this class, but it relied on templating
out the RpcContext (since it's not easy to build one for a unit test
and it's not clear what it would do) which became problematic as the
class grew. So I decided to add a new rpc-stress-tess that will test
this class within the rpc framework. I feel it's easier to do it that
way and that, since the client is not being used, the test can still
be very straight forward. This test is in a followup patch as it can
only run after the integration with the rest of the rpc subsystem.

Change-Id: I6718951a9998a6c9b0db35e8f09ff8304591e8b1
M src/kudu/rpc/CMakeLists.txt
A src/kudu/rpc/result_tracker.cc
A src/kudu/rpc/result_tracker.h
M src/kudu/rpc/rpc_context.h
4 files changed, 411 insertions(+), 0 deletions(-)

  git pull ssh://gerrit.cloudera.org:29418/kudu refs/changes/90/3190/9
To view, visit http://gerrit.cloudera.org:8080/3190
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Gerrit-MessageType: newpatchset
Gerrit-Change-Id: I6718951a9998a6c9b0db35e8f09ff8304591e8b1
Gerrit-PatchSet: 9
Gerrit-Project: kudu
Gerrit-Branch: master
Gerrit-Owner: David Ribeiro Alves <dral...@apache.org>
Gerrit-Reviewer: Adar Dembo <a...@cloudera.com>
Gerrit-Reviewer: David Ribeiro Alves <dral...@apache.org>
Gerrit-Reviewer: Kudu Jenkins
Gerrit-Reviewer: Todd Lipcon <t...@apache.org>

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