Paul Rogers has posted comments on this change. ( http://gerrit.cloudera.org:8080/11528 )
Change subject: IMPALA-7310: Use NDV=1 for a Column with all nulls ...................................................................... Patch Set 12: (3 comments) > Uploaded patch set 12. Addressed a few more review comments. Rebased on master. http://gerrit.cloudera.org:8080/#/c/11528/10//COMMIT_MSG Commit Message: http://gerrit.cloudera.org:8080/#/c/11528/10//COMMIT_MSG@71 PS10, Line 71: Bug: IMPALA-7310: All-null columns give wrong estimates in planner > We almost always put "IMPALA-7310:" in the first line of the commit message Fixed. http://gerrit.cloudera.org:8080/#/c/11528/10/fe/src/main/java/org/apache/impala/analysis/SlotRef.java File fe/src/main/java/org/apache/impala/analysis/SlotRef.java: http://gerrit.cloudera.org:8080/#/c/11528/10/fe/src/main/java/org/apache/impala/analysis/SlotRef.java@110 PS10, Line 110: // not zero. > Perhaps: "if we don't know the null count (in which case, getNumNulls() ret Done http://gerrit.cloudera.org:8080/#/c/11528/8/testdata/workloads/functional-planner/queries/PlannerTest/tpcds-all.test File testdata/workloads/functional-planner/queries/PlannerTest/tpcds-all.test: http://gerrit.cloudera.org:8080/#/c/11528/8/testdata/workloads/functional-planner/queries/PlannerTest/tpcds-all.test@a986 PS8, Line 986: > test Is this comment itself a test, or is this a request to test something? -- To view, visit http://gerrit.cloudera.org:8080/11528 To unsubscribe, visit http://gerrit.cloudera.org:8080/settings Gerrit-Project: Impala-ASF Gerrit-Branch: master Gerrit-MessageType: comment Gerrit-Change-Id: Ife657a43c9cafc451bd12ddf857dcb7169e97459 Gerrit-Change-Number: 11528 Gerrit-PatchSet: 12 Gerrit-Owner: Paul Rogers <par0...@yahoo.com> Gerrit-Reviewer: Impala Public Jenkins <impala-public-jenk...@cloudera.com> Gerrit-Reviewer: Paul Rogers <par0...@yahoo.com> Gerrit-Reviewer: Philip Zeyliger <phi...@cloudera.com> Gerrit-Reviewer: Vuk Ercegovac <vercego...@cloudera.com> Gerrit-Comment-Date: Fri, 12 Oct 2018 23:37:30 +0000 Gerrit-HasComments: Yes
