Vihang Karajgaonkar created HIVE-19388:
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Summary: ClassCastException on VectorMapJoinCommonOperator when
Key: HIVE-19388
URL: https://issues.apache.org/jira/browse/HIVE-19388
Project: Hive
Issue Type: Bug
Affects Versions: 2.3.2, 2.2.0, 2.1.1, 3.0.0, 3.1.0
Reporter: Vihang Karajgaonkar
Assignee: Vihang Karajgaonkar
I see the following exceptions when I a mapjoin operator is being initialized
on Hive-on-Spark and when vectorization is turned on.
This happens when the hashTable is empty. The code in
{{MapJoinTableContainerSerDe#getDefaultEmptyContainer}} method returns a
HashMapWrapper while the VectorMapJoinOperator expects a
{{MapJoinBytesTableContainer}} when {{hive.mapjoin.optimized.hashtable}} is set
to true.
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Caused by: java.lang.ClassCastException:
org.apache.hadoop.hive.ql.exec.persistence.HashMapWrapper cannot be cast to
org.apache.hadoop.hive.ql.exec.persistence.MapJoinTableContainerDirectAccess
at
org.apache.hadoop.hive.ql.exec.vector.mapjoin.optimized.VectorMapJoinOptimizedHashTable.<init>(VectorMapJoinOptimizedHashTable.java:92)
~[hive-exec-3.1.0-SNAPSHOT.jar:3.1.0-SNAPSHOT]
at
org.apache.hadoop.hive.ql.exec.vector.mapjoin.optimized.VectorMapJoinOptimizedHashMap.<init>(VectorMapJoinOptimizedHashMap.java:127)
~[hive-exec-3.1.0-SNAPSHOT.jar:3.1.0-SNAPSHOT]
at
org.apache.hadoop.hive.ql.exec.vector.mapjoin.optimized.VectorMapJoinOptimizedStringHashMap.<init>(VectorMapJoinOptimizedStringHashMap.java:60)
~[hive-exec-3.1.0-SNAPSHOT.jar:3.1.0-SNAPSHOT]
at
org.apache.hadoop.hive.ql.exec.vector.mapjoin.optimized.VectorMapJoinOptimizedCreateHashTable.createHashTable(VectorMapJoinOptimizedCreateHashTable.java:80)
~[hive-exec-3.1.0-SNAPSHOT.jar:3.1.0-SNAPSHOT]
at
org.apache.hadoop.hive.ql.exec.vector.mapjoin.VectorMapJoinCommonOperator.setUpHashTable(VectorMapJoinCommonOperator.java:485)
~[hive-exec-3.1.0-SNAPSHOT.jar:3.1.0-SNAPSHOT]
at
org.apache.hadoop.hive.ql.exec.vector.mapjoin.VectorMapJoinCommonOperator.completeInitializationOp(VectorMapJoinCommonOperator.java:461)
~[hive-exec-3.1.0-SNAPSHOT.jar:3.1.0-SNAPSHOT]
at
org.apache.hadoop.hive.ql.exec.Operator.completeInitialization(Operator.java:471)
~[hive-exec-3.1.0-SNAPSHOT.jar:3.1.0-SNAPSHOT]
at org.apache.hadoop.hive.ql.exec.Operator.initialize(Operator.java:401)
~[hive-exec-3.1.0-SNAPSHOT.jar:3.1.0-SNAPSHOT]
at org.apache.hadoop.hive.ql.exec.Operator.initialize(Operator.java:574)
~[hive-exec-3.1.0-SNAPSHOT.jar:3.1.0-SNAPSHOT]
at
org.apache.hadoop.hive.ql.exec.Operator.initializeChildren(Operator.java:526)
~[hive-exec-3.1.0-SNAPSHOT.jar:3.1.0-SNAPSHOT]
at org.apache.hadoop.hive.ql.exec.Operator.initialize(Operator.java:387)
~[hive-exec-3.1.0-SNAPSHOT.jar:3.1.0-SNAPSHOT]
at
org.apache.hadoop.hive.ql.exec.spark.SparkMapRecordHandler.init(SparkMapRecordHandler.java:109)
~[hive-exec-3.1.0-SNAPSHOT.jar:3.1.0-SNAPSHOT]
... 16 more
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