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From "Impala Public Jenkins (Code Review)" <>
Subject [Impala-ASF-CR] IMPALA-5744: Add 'use krpc' flag and create DataStream interface
Date Wed, 09 Aug 2017 22:45:52 GMT
Impala Public Jenkins has submitted this change and it was merged.

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

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

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

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

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. Using pure virtual base classes may result in code
duplication but the current approach is to optimize for the eventual
removal of the thrift implementations.

Stubs for the Krpc implementations are also introduced and are named
KrpcDataStream*. They currently only abort with a fatal error if they
are used. Their actual implementations will be filled in a later

When the time comes to standardize on the KRPC implementations of
DataStream*Base, we will get rid of the DataStream*Base classes and
the Thrift versions of the classes and rename KrpcDataStream* to
DataStream*. We will also rename all the references that the clients
have to DataStream*Base to DataStream*.

Also did some spurious includes cleanup.

Change-Id: I5d52245154e910529a68f53049520238eca16241
Reviewed-by: Sailesh Mukil <>
Tested-by: Impala Public Jenkins
M be/src/exec/
M be/src/exec/
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/
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/
M be/src/runtime/
M be/src/runtime/exec-env.h
M be/src/runtime/
A be/src/runtime/
A be/src/runtime/krpc-data-stream-mgr.h
A be/src/runtime/
A be/src/runtime/krpc-data-stream-recvr.h
M be/src/runtime/
M be/src/runtime/runtime-state.h
M be/src/service/
20 files changed, 436 insertions(+), 39 deletions(-)

  Impala Public Jenkins: Verified
  Sailesh Mukil: Looks good to me, approved

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Gerrit-MessageType: merged
Gerrit-Change-Id: I5d52245154e910529a68f53049520238eca16241
Gerrit-PatchSet: 14
Gerrit-Project: Impala-ASF
Gerrit-Branch: master
Gerrit-Owner: Sailesh Mukil <>
Gerrit-Reviewer: Henry Robinson <>
Gerrit-Reviewer: Impala Public Jenkins
Gerrit-Reviewer: Michael Ho <>
Gerrit-Reviewer: Sailesh Mukil <>

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