[jira] [Created] (HIVE-23542) Query based compaction failing with ClassCastException

["Rajkumar Singh (Jira)" <ji...@apache.org>]

Rajkumar Singh created HIVE-23542:
-------------------------------------

             Summary: Query based compaction failing with ClassCastException 
                 Key: HIVE-23542
                 URL: https://issues.apache.org/jira/browse/HIVE-23542
             Project: Hive
          Issue Type: Improvement
          Components: Hive
    Affects Versions: 4.0.0
            Reporter: Rajkumar Singh
            Assignee: Rajkumar Singh


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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