Xiang Yang has posted comments on this change. ( http://gerrit.cloudera.org:8080/18023 )
Change subject: IMPALA-7942 (part 2): Add query hints for predicate selectivities ...................................................................... Patch Set 23: (6 comments) http://gerrit.cloudera.org:8080/#/c/18023/23//COMMIT_MSG Commit Message: http://gerrit.cloudera.org:8080/#/c/18023/23//COMMIT_MSG@26 PS23, Line 26: braket nit: brackets http://gerrit.cloudera.org:8080/#/c/18023/23/fe/src/main/java/org/apache/impala/analysis/Predicate.java File fe/src/main/java/org/apache/impala/analysis/Predicate.java: http://gerrit.cloudera.org:8080/#/c/18023/23/fe/src/main/java/org/apache/impala/analysis/Predicate.java@38 PS23, Line 38: protected double selectivityHint_; : // true if the selectivity hint is set to a valid value. : protected boolean hasValidSelectivityHint_; >From my point of view, it's not necessary to use the redundant variable >'hasValidSelectivityHint_' to cache the result for a performance reason, and I >suggest to replace it with a just-in-time calculate function. http://gerrit.cloudera.org:8080/#/c/18023/23/fe/src/main/java/org/apache/impala/analysis/Predicate.java@183 PS23, Line 183: public boolean selectivityValidHintSet() { nit: rename to hasValidSelectivityHint() ? http://gerrit.cloudera.org:8080/#/c/18023/21/fe/src/test/java/org/apache/impala/analysis/AnalyzeStmtsTest.java File fe/src/test/java/org/apache/impala/analysis/AnalyzeStmtsTest.java: http://gerrit.cloudera.org:8080/#/c/18023/21/fe/src/test/java/org/apache/impala/analysis/AnalyzeStmtsTest.java@5144 PS21, Line 5144: > nit: add space on both sides of the '>'. same the followings. http://gerrit.cloudera.org:8080/#/c/18023/21/fe/src/test/java/org/apache/impala/analysis/AnalyzeStmtsTest.java@5181 PS21, Line 5181: > nit: same as above. http://gerrit.cloudera.org:8080/#/c/18023/21/testdata/workloads/functional-planner/queries/PlannerTest/predicate-selectivity-hint.test File testdata/workloads/functional-planner/queries/PlannerTest/predicate-selectivity-hint.test: http://gerrit.cloudera.org:8080/#/c/18023/21/testdata/workloads/functional-planner/queries/PlannerTest/predicate-selectivity-hint.test@161 PS21, Line 161: ==== Does there need a compound 'OR' predicate without hint test case? -- To view, visit http://gerrit.cloudera.org:8080/18023 To unsubscribe, visit http://gerrit.cloudera.org:8080/settings Gerrit-Project: Impala-ASF Gerrit-Branch: master Gerrit-MessageType: comment Gerrit-Change-Id: I2776b9bbd878b8a21d9c866b400140a454f59e1b Gerrit-Change-Number: 18023 Gerrit-PatchSet: 23 Gerrit-Owner: wangsheng <sky...@163.com> Gerrit-Reviewer: Amogh Margoor <amarg...@gmail.com> Gerrit-Reviewer: Fucun Chu <chufu...@hotmail.com> Gerrit-Reviewer: Impala Public Jenkins <impala-public-jenk...@cloudera.com> Gerrit-Reviewer: Kurt Deschler <kdesc...@cloudera.com> Gerrit-Reviewer: Qifan Chen <qfc...@hotmail.com> Gerrit-Reviewer: Quanlong Huang <huangquanl...@gmail.com> Gerrit-Reviewer: Xiang Yang <yx91...@126.com> Gerrit-Reviewer: Yifan Zhang <chinazhangyi...@163.com> Gerrit-Reviewer: Zoltan Borok-Nagy <borokna...@cloudera.com> Gerrit-Reviewer: wangsheng <sky...@163.com> Gerrit-Comment-Date: Sun, 26 Mar 2023 12:05:43 +0000 Gerrit-HasComments: Yes
