Sailesh Mukil has uploaded a new change for review. http://gerrit.cloudera.org:8080/3576
Change subject: IMPALA-3823: Add timer to measure Parquet footer reads ...................................................................... IMPALA-3823: Add timer to measure Parquet footer reads It's been observed that Parquet footer reads perform poorly especially when reading from S3. This patch adds a timer "FooterProcessingTimer" which keeps a track of the average time each split of each scan node spends in reading and processing the parquet footer. Change-Id: Icf87bad90037dd0cea63b10c537382ec0f980cbf --- M be/src/exec/hdfs-parquet-scanner.cc M be/src/exec/hdfs-parquet-scanner.h 2 files changed, 25 insertions(+), 2 deletions(-) git pull ssh://gerrit.cloudera.org:29418/Impala refs/changes/76/3576/1 -- To view, visit http://gerrit.cloudera.org:8080/3576 To unsubscribe, visit http://gerrit.cloudera.org:8080/settings Gerrit-MessageType: newchange Gerrit-Change-Id: Icf87bad90037dd0cea63b10c537382ec0f980cbf Gerrit-PatchSet: 1 Gerrit-Project: Impala Gerrit-Branch: cdh5-trunk Gerrit-Owner: Sailesh Mukil <[email protected]>
