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Posted to issues@hive.apache.org by "ASF GitHub Bot (Jira)" <ji...@apache.org> on 2023/03/22 16:45:00 UTC
[jira] [Work logged] (HIVE-27059) Wrong object inspector will be created when use collect_list and disable map-side aggregation
[ https://issues.apache.org/jira/browse/HIVE-27059?focusedWorklogId=852319&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-852319 ]
ASF GitHub Bot logged work on HIVE-27059:
-----------------------------------------
Author: ASF GitHub Bot
Created on: 22/Mar/23 16:44
Start Date: 22/Mar/23 16:44
Worklog Time Spent: 10m
Work Description: sonarcloud[bot] commented on PR #4042:
URL: https://github.com/apache/hive/pull/4042#issuecomment-1479914602
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Issue Time Tracking
-------------------
Worklog Id: (was: 852319)
Time Spent: 1h (was: 50m)
> Wrong object inspector will be created when use collect_list and disable map-side aggregation
> ---------------------------------------------------------------------------------------------
>
> Key: HIVE-27059
> URL: https://issues.apache.org/jira/browse/HIVE-27059
> Project: Hive
> Issue Type: Bug
> Components: Query Planning
> Affects Versions: 2.3.8, 3.1.3, 4.0.0-alpha-2
> Environment:
> Reporter: Genmao Yu
> Assignee: Genmao Yu
> Priority: Major
> Labels: pull-request-available
> Time Spent: 1h
> Remaining Estimate: 0h
>
> Query will fail when use collect_list (or collect_set) and disable map-side aggregationg:
> {code:java}
> Caused by: java.lang.ClassCastException: org.apache.hadoop.hive.serde2.lazybinary.LazyBinaryMap cannot be cast to java.util.Map
> at org.apache.hadoop.hive.serde2.objectinspector.StandardMapObjectInspector.getMap(StandardMapObjectInspector.java:85)
> at org.apache.hadoop.hive.serde2.objectinspector.ObjectInspectorUtils.copyToStandardObject(ObjectInspectorUtils.java:437)
> at org.apache.hadoop.hive.serde2.objectinspector.ObjectInspectorUtils.copyToStandardObject(ObjectInspectorUtils.java:362)
> at org.apache.hadoop.hive.ql.udf.generic.GenericUDAFMkCollectionEvaluator.putIntoCollection(GenericUDAFMkCollectionEvaluator.java:154)
> at org.apache.hadoop.hive.ql.udf.generic.GenericUDAFMkCollectionEvaluator.iterate(GenericUDAFMkCollectionEvaluator.java:120)
> at org.apache.hadoop.hive.ql.udf.generic.GenericUDAFEvaluator.aggregate(GenericUDAFEvaluator.java:192)
> at org.apache.hadoop.hive.ql.exec.GroupByOperator.updateAggregations(GroupByOperator.java:638)
> at org.apache.hadoop.hive.ql.exec.GroupByOperator.processAggr(GroupByOperator.java:877)
> at org.apache.hadoop.hive.ql.exec.GroupByOperator.processKey(GroupByOperator.java:721)
> at org.apache.hadoop.hive.ql.exec.GroupByOperator.process(GroupByOperator.java:787)
> {code}
> To reproduce this issue:
> {code:sql}
> create table tb1 (a int, b string, c string);
> insert into tb1 values (1, "100", "101");
> insert into tb1 values (1, "102", "103");
> insert into tb1 values (2, "200", "201");
> set hive.map.aggr=false;
> select a, collect_list(map("b",b,"c",c)) as col1 from tb1 group by a;
> select a, collect_set(array(b, c)) as col1 from tb1 group by a;
> {code}
> To work around this issue:
> {code:sql}
> set hive.map.aggr=true;
> {code}
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