Mostafa Mokhtar has posted comments on this change. Change subject: Add doc for MT_DOP query option. ......................................................................
Patch Set 1: (2 comments) http://gerrit.cloudera.org:8080/#/c/5652/1/docs/topics/impala_mt_dop.xml File docs/topics/impala_mt_dop.xml: Line 39: Sets the degree of parallelism used for certain operations that Should we mention the operations where mt_dop applies? Compute stats and queries that have scan and aggregate only operators? Line 42: and increased memory and CPU usage during statement processing. I would reword to "ideal balance between response time, memory and CPU". As some operations like "compute stats" consume less overall memory due to running with less scanner threads. -- To view, visit http://gerrit.cloudera.org:8080/5652 To unsubscribe, visit http://gerrit.cloudera.org:8080/settings Gerrit-MessageType: comment Gerrit-Change-Id: Ife2786532b425af6d230074f1c0b5c7dcb2b8a92 Gerrit-PatchSet: 1 Gerrit-Project: Impala-ASF Gerrit-Branch: master Gerrit-Owner: John Russell <jruss...@cloudera.com> Gerrit-Reviewer: Alex Behm <alex.b...@cloudera.com> Gerrit-Reviewer: Mostafa Mokhtar <mmokh...@cloudera.com> Gerrit-Reviewer: Tim Armstrong <tarmstr...@cloudera.com> Gerrit-HasComments: Yes
