[Impala-ASF-CR] IMPALA-5388: Only retry RPC on lost connection in send call

["Michael Ho (Code Review)" <ge...@cloudera.org>]

Michael Ho has uploaded a new patch set (#2).

Change subject: IMPALA-5388: Only retry RPC on lost connection in send call
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IMPALA-5388: Only retry RPC on lost connection in send call

Previously, DoRpc() blacklists only a couple of conditions
which shouldn't retry the RPC on exception. This is fragile
as the errors could have happened after the payload has been
successfully sent to the destination. Such aggressive retry
behvaior can lead to duplicated row batches being sent, causing
wrong results in queries.

This change fixes the problem by whitelisting the conditions
in which the RPC can be retried. Specifically, it pattern-matches
against certain errors in TSocket::write_partial() in the thrift
library and only retries the RPC in those cases.

Change-Id: I176975f2aa521d5be8a40de51067b1497923d09b
---
M be/src/rpc/thrift-util.cc
M be/src/rpc/thrift-util.h
M be/src/runtime/client-cache.h
3 files changed, 60 insertions(+), 33 deletions(-)


  git pull ssh://gerrit.cloudera.org:29418/Impala-ASF refs/changes/63/7063/2
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Gerrit-MessageType: newpatchset
Gerrit-Change-Id: I176975f2aa521d5be8a40de51067b1497923d09b
Gerrit-PatchSet: 2
Gerrit-Project: Impala-ASF
Gerrit-Branch: master
Gerrit-Owner: Michael Ho <kw...@cloudera.com>
Gerrit-Reviewer: Henry Robinson <he...@cloudera.com>
Gerrit-Reviewer: Michael Ho <kw...@cloudera.com>
Gerrit-Reviewer: Sailesh Mukil <sa...@cloudera.com>