Mostafa Mokhtar has posted comments on this change. Change subject: IMPALA-2805: Order filters based on selectivity and cost ......................................................................
Patch Set 1: (1 comment) http://gerrit.cloudera.org:8080/#/c/2598/1/fe/src/main/java/com/cloudera/impala/planner/PlanNode.java File fe/src/main/java/com/cloudera/impala/planner/PlanNode.java: Line 667: double cost = e.getCost() + (totalCost - e.getCost()) * e.getSelectivity(); > Data type is taken into account when the costs are computed, since these co Where is the data type used in cost formula? sorry I couldn't find it. For instance "age in (10,12,13)" should be cheaper than "city in ('New York', 'San Francisco'), the model should reflect that. -- To view, visit http://gerrit.cloudera.org:8080/2598 To unsubscribe, visit http://gerrit.cloudera.org:8080/settings Gerrit-MessageType: comment Gerrit-Change-Id: I02279a26fbc6308ac5eb819d78345fc010469034 Gerrit-PatchSet: 1 Gerrit-Project: Impala Gerrit-Branch: cdh5-trunk Gerrit-Owner: Thomas Tauber-Marshall <tmarsh...@cloudera.com> Gerrit-Reviewer: Alex Behm <alex.b...@cloudera.com> Gerrit-Reviewer: Marcel Kornacker <mar...@cloudera.com> Gerrit-Reviewer: Matthew Jacobs <m...@cloudera.com> Gerrit-Reviewer: Mostafa Mokhtar <mmokh...@cloudera.com> Gerrit-Reviewer: Thomas Tauber-Marshall <tmarsh...@cloudera.com> Gerrit-HasComments: Yes
