Impala Public Jenkins has submitted this change and it was merged. ( http://gerrit.cloudera.org:8080/9966 )
Change subject: IMPALA-6813: Hedged reads metrics broken when scanning non-HDFS based table ...................................................................... IMPALA-6813: Hedged reads metrics broken when scanning non-HDFS based table We realized that the libHDFS API call hdfsGetHedgedReadMetrics() crashes when the 'fs' argument passed to it is not a HDFS filesystem. There is an open bug for it on the HDFS side: HDFS-13417 However, it looks like we won't be getting a fix for it in the short term, so our only option at this point is to skip it. Testing: Made sure that enabling preads and scanning from S3 doesn't cause a crash. Also, added a custom cluster test to exercise the pread code path. We are unable to verify hedged reads in a minicluster, but we can at least exercise the code path to make sure that nothing breaks. Change-Id: I48fe80dfd9a1ed68a8f2b7038e5f42b5a3df3baa Reviewed-on: http://gerrit.cloudera.org:8080/9966 Reviewed-by: Sailesh Mukil <[email protected]> Tested-by: Impala Public Jenkins <[email protected]> --- M be/src/runtime/io/scan-range.cc A tests/custom_cluster/test_hedged_reads.py 2 files changed, 33 insertions(+), 1 deletion(-) Approvals: Sailesh Mukil: Looks good to me, approved Impala Public Jenkins: Verified -- To view, visit http://gerrit.cloudera.org:8080/9966 To unsubscribe, visit http://gerrit.cloudera.org:8080/settings Gerrit-Project: Impala-ASF Gerrit-Branch: master Gerrit-MessageType: merged Gerrit-Change-Id: I48fe80dfd9a1ed68a8f2b7038e5f42b5a3df3baa Gerrit-Change-Number: 9966 Gerrit-PatchSet: 4 Gerrit-Owner: Sailesh Mukil <[email protected]> Gerrit-Reviewer: Dan Hecht <[email protected]> Gerrit-Reviewer: Impala Public Jenkins <[email protected]> Gerrit-Reviewer: Philip Zeyliger <[email protected]> Gerrit-Reviewer: Sailesh Mukil <[email protected]> Gerrit-Reviewer: Tim Armstrong <[email protected]>
