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https://issues.apache.org/jira/browse/HIVE-23542?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Rajkumar Singh updated HIVE-23542:
----------------------------------
Issue Type: Bug (was: Improvement)
> Query based compaction failing with ClassCastException
> -------------------------------------------------------
>
> Key: HIVE-23542
> URL: https://issues.apache.org/jira/browse/HIVE-23542
> Project: Hive
> Issue Type: Bug
> Components: Hive
> Affects Versions: 4.0.0
> Reporter: Rajkumar Singh
> Assignee: Rajkumar Singh
> Priority: Major
> Attachments: HIVE-23542.patch
>
>
> Steps to repro:
> create table test(id int);
> insert into table test1 values (1),(2),(3);
> insert into table test1 values (4),(5),(6);
> run query-based compactor and it will fail with the following exception:-
> {code:java}
> alter table test compact 'major'; -- query based compaction
> Caused by: java.lang.RuntimeException:
> org.apache.hadoop.hive.ql.metadata.HiveException: Hive Runtime Error while
> processing row
> at
> org.apache.hadoop.hive.ql.exec.tez.MapRecordSource.processRow(MapRecordSource.java:101)
> at
> org.apache.hadoop.hive.ql.exec.tez.MapRecordSource.pushRecord(MapRecordSource.java:76)
> at
> org.apache.hadoop.hive.ql.exec.tez.MapRecordProcessor.run(MapRecordProcessor.java:426)
> at
> org.apache.hadoop.hive.ql.exec.tez.TezProcessor.initializeAndRunProcessor(TezProcessor.java:267)
> ... 16 more
> Caused by: org.apache.hadoop.hive.ql.metadata.HiveException: Hive Runtime
> Error while processing row
> at
> org.apache.hadoop.hive.ql.exec.MapOperator.process(MapOperator.java:573)
> at
> org.apache.hadoop.hive.ql.exec.tez.MapRecordSource.processRow(MapRecordSource.java:92)
> ... 19 more
> Caused by: java.lang.ClassCastException: java.lang.Integer cannot be cast to
> org.apache.hadoop.io.IntWritable
> at
> org.apache.hadoop.hive.ql.exec.FileSinkOperator.process(FileSinkOperator.java:967)
> at org.apache.hadoop.hive.ql.exec.Operator.forward(Operator.java:938)
> at
> org.apache.hadoop.hive.ql.exec.SelectOperator.process(SelectOperator.java:95)
> at org.apache.hadoop.hive.ql.exec.Operator.forward(Operator.java:938)
> at
> org.apache.hadoop.hive.ql.exec.TableScanOperator.process(TableScanOperator.java:128)
> at
> org.apache.hadoop.hive.ql.exec.MapOperator$MapOpCtx.forward(MapOperator.java:152)
> at
> org.apache.hadoop.hive.ql.exec.MapOperator.process(MapOperator.java:552)
> {code}
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