[Impala-CR](cdh5-trunk) IMPALA-3292. Kudu scanner should not fail if KeepAlive request fails

["Todd Lipcon (Code Review)" <ge...@cloudera.org>]

Todd Lipcon has uploaded a new change for review.

  http://gerrit.cloudera.org:8080/2708

Change subject: IMPALA-3292. Kudu scanner should not fail if KeepAlive request fails
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IMPALA-3292. Kudu scanner should not fail if KeepAlive request fails

The KeepKuduScannerAlive() function can fail with ServiceUnavailable if
it is running against a very heavily-loaded tablet server. This is OK –
it should ignore the warning and just try again after a short time,
rather than failing the whole query.

Change-Id: I10ad2cfde3e50a4486d03f8dd763faac2eb4926a
---
M be/src/exec/kudu-scan-node.cc
M be/src/exec/kudu-scanner.cc
M be/src/exec/kudu-scanner.h
3 files changed, 22 insertions(+), 12 deletions(-)


  git pull ssh://gerrit.cloudera.org:29418/Impala refs/changes/08/2708/1
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Gerrit-MessageType: newchange
Gerrit-Change-Id: I10ad2cfde3e50a4486d03f8dd763faac2eb4926a
Gerrit-PatchSet: 1
Gerrit-Project: Impala
Gerrit-Branch: cdh5-trunk
Gerrit-Owner: Todd Lipcon <to...@apache.org>