Sailesh Mukil has uploaded a new change for review.

  http://gerrit.cloudera.org:8080/6886

Change subject: IMPALA-4764: Add Hedged read metrics
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IMPALA-4764: Add Hedged read metrics

The following Hadoop metrics have been added to the /metrics page:

hedgedReadOps - the number of hedged reads that have occurred

hedgeReadOpsWin - the number of times the hedged read returned
faster than the original read

This change depends on the following new commit to HDFS:
https://github.com/apache/hadoop/commit/8c81a16a1fa40d3a3796b1c3633328f1340883ca

Change-Id: Id4a5d396abb3373d352ad2df8c2272db018114da
---
M be/src/runtime/disk-io-mgr-scan-range.cc
M be/src/util/impalad-metrics.cc
M be/src/util/impalad-metrics.h
3 files changed, 33 insertions(+), 1 deletion(-)


  git pull ssh://gerrit.cloudera.org:29418/Impala-ASF refs/changes/86/6886/1
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Gerrit-MessageType: newchange
Gerrit-Change-Id: Id4a5d396abb3373d352ad2df8c2272db018114da
Gerrit-PatchSet: 1
Gerrit-Project: Impala-ASF
Gerrit-Branch: master
Gerrit-Owner: Sailesh Mukil <[email protected]>

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