[ https://issues.apache.org/jira/browse/HIVE-18250?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Jesus Camacho Rodriguez reassigned HIVE-18250: ---------------------------------------------- Assignee: Jesus Camacho Rodriguez > CBO gets turned off with duplicates in RR error > ----------------------------------------------- > > Key: HIVE-18250 > URL: https://issues.apache.org/jira/browse/HIVE-18250 > Project: Hive > Issue Type: Bug > Components: CBO, Query Planning > Affects Versions: 2.0.0, 2.1.0, 2.2.0, 2.3.0 > Reporter: Ashutosh Chauhan > Assignee: Jesus Camacho Rodriguez > > {code} > create table t1 (a int); > explain select t1.a as a1, min(t1.a) as a from t1 group by t1.a; > {code} > CBO gets turned off with: > {code} > WARN [2e80e34e-dc46-49cf-88bf-2c24c0262d41 main] parse.RowResolver: Found > duplicate column alias in RR: null.a => {null, a1, _col0: int} adding null.a > => {null, null, _col1: int} > 2017-12-07T15:27:47,651 ERROR [2e80e34e-dc46-49cf-88bf-2c24c0262d41 main] > parse.CalcitePlanner: CBO failed, skipping CBO. > org.apache.hadoop.hive.ql.optimizer.calcite.CalciteSemanticException: Cannot > add column to RR: null.a => _col1: int due to duplication, see previous > warnings > at > org.apache.hadoop.hive.ql.parse.CalcitePlanner$CalcitePlannerAction.genSelectLogicalPlan(CalcitePlanner.java:3985) > ~[hive-exec-3.0.0-SNAPSHOT.jar:3.0.0-SNAPSHOT] > at > org.apache.hadoop.hive.ql.parse.CalcitePlanner$CalcitePlannerAction.genLogicalPlan(CalcitePlanner.java:4313) > ~[hive-exec-3.0.0-SNAPSHOT.jar:3.0.0-SNAPSHOT] > at > org.apache.hadoop.hive.ql.parse.CalcitePlanner$CalcitePlannerAction.apply(CalcitePlanner.java:1392) > ~[hive-exec-3.0.0-SNAPSHOT.jar:3.0.0-SNAPSHOT] > at > org.apache.hadoop.hive.ql.parse.CalcitePlanner$CalcitePlannerAction.apply(CalcitePlanner.java:1322) > ~[hive-exec-3.0.0-SNAPSHOT.jar:3.0.0-SNAPSHOT] > {code} > After that non-CBO path completes the query. -- This message was sent by Atlassian JIRA (v6.4.14#64029)