[Impala-ASF-CR] IMPALA-5394: Change ThriftServer() to always use TAcceptQueueServer

["John Sherman (Code Review)" <ge...@cloudera.org>]

Hello Henry Robinson, Matthew Jacobs, Sailesh Mukil, Dan Hecht, 

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

    http://gerrit.cloudera.org:8080/7061

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

Change subject: IMPALA-5394: Change ThriftServer() to always use TAcceptQueueServer
......................................................................

IMPALA-5394: Change ThriftServer() to always use TAcceptQueueServer

- Previously TThreadPoolServer called getTransport() on a client from
  the Server thread (the thread that did the accepts).
  - TSaslServerTransport->getTransport() called TSaslTransport->open()
  - TSaslServerTransport->open() tried to negotiate SASL which calls
    read/write
    - If read/write blocks indefinitely, the TThreadPoolServer could
      not accept connections until tcp_keepalive kicked in.
- Set the underlying TSocket's recvTimeout and sendTimeout before the
  TSaslServerTransport->open() and reset them to 0 after open()
  completes.
- Added sasl_connect_tcp_timeout_ms flag that defaults to 300000
  milliseconds (5 minutes)
- Add the ability for TAcceptQueueServer to limit the maximum
  number of concurrent tasks
- Added a test case to thrift-server-test to test
  max_concurrent_connections enforcement
- Changed the remaining Thrift servers to use TAcceptQueueServer.
  (hs2/beeswax/network-perf-benchmark)
  - The timeout is still needed in TAcceptQueueServer since
    SetupConnection follows a similar pattern that TThreadPoolServer
    does.
- Removed support for TThreadPool from ThriftServer() since it is
  no longer used anywhere. ThriftServer() now always uses
  TAcceptQueueServer.
- Deprecated enable_accept_queue_server flag and removed supporting
  code.

Change-Id: I56a5f3d9cf931cff14eae7f236fea018236a6255
---
M be/src/benchmarks/network-perf-benchmark.cc
M be/src/common/global-flags.cc
M be/src/rpc/TAcceptQueueServer.cpp
M be/src/rpc/TAcceptQueueServer.h
M be/src/rpc/thrift-server-test.cc
M be/src/rpc/thrift-server.cc
M be/src/rpc/thrift-server.h
M be/src/service/impala-server.cc
M be/src/transport/TSaslServerTransport.cpp
M common/thrift/metrics.json
10 files changed, 159 insertions(+), 112 deletions(-)


  git pull ssh://gerrit.cloudera.org:29418/Impala-ASF refs/changes/61/7061/9
-- 
To view, visit http://gerrit.cloudera.org:8080/7061
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Gerrit-Project: Impala-ASF
Gerrit-Branch: master
Gerrit-MessageType: newpatchset
Gerrit-Change-Id: I56a5f3d9cf931cff14eae7f236fea018236a6255
Gerrit-Change-Number: 7061
Gerrit-PatchSet: 9
Gerrit-Owner: John Sherman <jf...@arcadiadata.com>
Gerrit-Reviewer: Dan Hecht <dh...@cloudera.com>
Gerrit-Reviewer: Henry Robinson <he...@cloudera.com>
Gerrit-Reviewer: John Sherman <jf...@arcadiadata.com>
Gerrit-Reviewer: Matthew Jacobs <mj...@apache.org>
Gerrit-Reviewer: Sailesh Mukil <sa...@cloudera.com>