Sailesh Mukil has uploaded a new patch set (#5).

Change subject: IMPALA-5744: Add dummy 'use_krpc' flag and create DataStream 
interface
......................................................................

IMPALA-5744: Add dummy 'use_krpc' flag and create DataStream interface

This patch introduces a dummy 'use_krpc' flag and creates an abstract
interface for the DataStreamRecvr/Mgr.

The DataStreamSender implements the same virtual interface as the
DataSink, so a pure virtual class for the DataStreamSender would
essentially be an empty class. Therefore, it is not implemented.

The new interfaces are pure virtual base classes and are named
DataStream*Base.

The future KRPC patches will also implement the DataStream*Base
interfaces.

The 'use_krpc' flag defaults to 'false'. Cluster startup will abort
with an error if the flag is switched to 'true'.

Change-Id: I5d52245154e910529a68f53049520238eca16241
---
M be/src/exec/data-sink.cc
M be/src/exec/exchange-node.cc
M be/src/exec/exchange-node.h
M be/src/runtime/CMakeLists.txt
A be/src/runtime/data-stream-mgr-base.h
M be/src/runtime/data-stream-mgr.cc
M be/src/runtime/data-stream-mgr.h
A be/src/runtime/data-stream-recvr-base.h
M be/src/runtime/data-stream-recvr.h
M be/src/runtime/data-stream-test.cc
M be/src/runtime/exec-env.cc
M be/src/runtime/exec-env.h
M be/src/runtime/fragment-instance-state.cc
M be/src/runtime/runtime-state.cc
M be/src/runtime/runtime-state.h
M be/src/service/impala-server.cc
16 files changed, 189 insertions(+), 36 deletions(-)


  git pull ssh://gerrit.cloudera.org:29418/Impala-ASF refs/changes/42/7542/5
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Gerrit-MessageType: newpatchset
Gerrit-Change-Id: I5d52245154e910529a68f53049520238eca16241
Gerrit-PatchSet: 5
Gerrit-Project: Impala-ASF
Gerrit-Branch: master
Gerrit-Owner: Sailesh Mukil <[email protected]>
Gerrit-Reviewer: Henry Robinson <[email protected]>
Gerrit-Reviewer: Michael Ho <[email protected]>
Gerrit-Reviewer: Sailesh Mukil <[email protected]>

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