Internal Jenkins has submitted this change and it was merged. Change subject: IMPALA-4577: Adjust maximum size of row batch queue with MT_DOP. ......................................................................
IMPALA-4577: Adjust maximum size of row batch queue with MT_DOP. When MT_DOP is set, non-Parquet scans are run with the old scan node with a fixed NUM_SCANNER_THREADS=1. This patch adjust the maximum size of the row batch queue based on MT_DOP for each such scan instance to avoid a significant increase in the memory consumption of such scans. The max queued batches per scan-node instance is at least 2 to always allow for some parallelism between the producer/consumer. Decreases the maximum allowed value for MT_DOP from 128 to 64. Change-Id: Ic2aa260f9265ec21173fb703c41934964ece6485 Reviewed-on: http://gerrit.cloudera.org:8080/5330 Reviewed-by: Alex Behm <alex.b...@cloudera.com> Tested-by: Internal Jenkins --- M be/src/exec/hdfs-scan-node.cc M be/src/exec/hdfs-scan-node.h M be/src/service/query-options.cc 3 files changed, 24 insertions(+), 11 deletions(-) Approvals: Internal Jenkins: Verified Alex Behm: Looks good to me, approved -- To view, visit http://gerrit.cloudera.org:8080/5330 To unsubscribe, visit http://gerrit.cloudera.org:8080/settings Gerrit-MessageType: merged Gerrit-Change-Id: Ic2aa260f9265ec21173fb703c41934964ece6485 Gerrit-PatchSet: 5 Gerrit-Project: Impala-ASF Gerrit-Branch: master Gerrit-Owner: Alex Behm <alex.b...@cloudera.com> Gerrit-Reviewer: Alex Behm <alex.b...@cloudera.com> Gerrit-Reviewer: Internal Jenkins Gerrit-Reviewer: Marcel Kornacker <mar...@cloudera.com> Gerrit-Reviewer: Michael Ho <k...@cloudera.com> Gerrit-Reviewer: Tim Armstrong <tarmstr...@cloudera.com>
