Matthew Jacobs has uploaded a new patch set (#2). Change subject: IMPALA-4740: Add option to use hdfsPread() for HDFS hedged reads ......................................................................
IMPALA-4740: Add option to use hdfsPread() for HDFS hedged reads In order to use HDFS hedged reads, the hdfsPread API must be used instead of the hdfsRead() call. Adds a flag to use hdfsPread: --use_hdfs_pread Testing: * Running existing tests with this flag enabled. * Cluster testing with HDFS hedged reads enabled via the HDFS client config. * Manually tested setting the 'max_chunk_size' to a small value to force multiple iterations of the while loop which would only normally happen on S3. Tested reading lineitem was OK. Change-Id: Iecc8b12aa20cbfe08f4ef6a08a191e49709d9525 --- M be/src/runtime/disk-io-mgr-scan-range.cc 1 file changed, 13 insertions(+), 1 deletion(-) git pull ssh://gerrit.cloudera.org:29418/Impala-ASF refs/changes/35/5635/2 -- To view, visit http://gerrit.cloudera.org:8080/5635 To unsubscribe, visit http://gerrit.cloudera.org:8080/settings Gerrit-MessageType: newpatchset Gerrit-Change-Id: Iecc8b12aa20cbfe08f4ef6a08a191e49709d9525 Gerrit-PatchSet: 2 Gerrit-Project: Impala-ASF Gerrit-Branch: master Gerrit-Owner: Matthew Jacobs <m...@cloudera.com> Gerrit-Reviewer: Matthew Jacobs <m...@cloudera.com> Gerrit-Reviewer: Tim Armstrong <tarmstr...@cloudera.com>
