Impala Public Jenkins has submitted this change and it was merged. Change subject: IMPALA-4764: Add Hedged read metrics ......................................................................
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 hedgedReadOpsWin - the number of times the hedged read returned faster than the original read The metrics will be updated only when --use_hdfs_pread is set to 'true'. This change depends on the following new commit to HDFS: https://github.com/apache/hadoop/commit/8c81a16a1fa40d3a3796b1c3633328f1340883ca Testing: Not adding tests since it requires some custom hadoop configuration. Tested manually by setting the configurations and verifying that the metrics work. Change-Id: Id4a5d396abb3373d352ad2df8c2272db018114da Reviewed-on: http://gerrit.cloudera.org:8080/6886 Reviewed-by: Matthew Jacobs <[email protected]> Reviewed-by: Lars Volker <[email protected]> Tested-by: Impala Public Jenkins --- M be/src/runtime/disk-io-mgr-scan-range.cc M be/src/util/impalad-metrics.cc M be/src/util/impalad-metrics.h M common/thrift/metrics.json 4 files changed, 56 insertions(+), 1 deletion(-) Approvals: Impala Public Jenkins: Verified Lars Volker: Looks good to me, but someone else must approve Matthew Jacobs: Looks good to me, approved -- To view, visit http://gerrit.cloudera.org:8080/6886 To unsubscribe, visit http://gerrit.cloudera.org:8080/settings Gerrit-MessageType: merged Gerrit-Change-Id: Id4a5d396abb3373d352ad2df8c2272db018114da Gerrit-PatchSet: 6 Gerrit-Project: Impala-ASF Gerrit-Branch: master Gerrit-Owner: Sailesh Mukil <[email protected]> Gerrit-Reviewer: Impala Public Jenkins Gerrit-Reviewer: Lars Volker <[email protected]> Gerrit-Reviewer: Matthew Jacobs <[email protected]> Gerrit-Reviewer: Sailesh Mukil <[email protected]>
