[HIVE-22094] queries failing with ClassCastException: hive.ql.exec.vector.DecimalColumnVector cannot be cast to hive.ql.exec.vector.Decimal64ColumnVector

• Type: Task
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 4.0.0-alpha-1
• Component/s: Hive
• Assignee: Attila Magyar
• Reporter: Attila Magyar
• Created: 09/Aug/19 12:31
• Updated: 17/Nov/22 08:50
• Resolved: 10/Aug/19 22:33

Description

When running a query like this

select sum(salary.salary_paid) from salary, employee_closure where salary.employee_id = employee_closure.employee_id;

with hive.auto.convert.join=true and hive.vectorized.execution.enabled=true the following exception occurs

Caused by: java.lang.ClassCastException: org.apache.hadoop.hive.ql.exec.vector.DecimalColumnVector cannot be cast to org.apache.hadoop.hive.ql.exec.vector.Decimal64ColumnVector

at org.apache.hadoop.hive.ql.exec.vector.expressions.aggregates.VectorUDAFSumDecimal64ToDecimal.aggregateInput(VectorUDAFSumDecimal64ToDecimal.java:320)

at org.apache.hadoop.hive.ql.exec.vector.VectorGroupByOperator$ProcessingModeBase.processAggregators(VectorGroupByOperator.java:217)

at org.apache.hadoop.hive.ql.exec.vector.VectorGroupByOperator$ProcessingModeHashAggregate.doProcessBatch(VectorGroupByOperator.java:414)

at org.apache.hadoop.hive.ql.exec.vector.VectorGroupByOperator$ProcessingModeBase.processBatch(VectorGroupByOperator.java:182)

at org.apache.hadoop.hive.ql.exec.vector.VectorGroupByOperator.process(VectorGroupByOperator.java:1124)

at org.apache.hadoop.hive.ql.exec.Operator.vectorForward(Operator.java:919)

at org.apache.hadoop.hive.ql.exec.vector.mapjoin.VectorMapJoinGenerateResultOperator.forwardOverflow(VectorMapJoinGenerateResultOperator.java:706)

at org.apache.hadoop.hive.ql.exec.vector.mapjoin.VectorMapJoinInnerBigOnlyGenerateResultOperator.generateHashMultiSetResultMultiValue(VectorMapJoinInnerBigOnlyGenerateResultOperator.java:268)

at org.apache.hadoop.hive.ql.exec.vector.mapjoin.VectorMapJoinInnerBigOnlyGenerateResultOperator.finishInnerBigOnly(VectorMapJoinInnerBigOnlyGenerateResultOperator.java:180)

at org.apache.hadoop.hive.ql.exec.vector.mapjoin.VectorMapJoinInnerBigOnlyLongOperator.processBatch(VectorMapJoinInnerBigOnlyLongOperator.java:379)

... 28 more

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