[HIVE-6059] Add union type support in LazyBinarySerDe

• Type: New Feature
• Status: Open
• Priority: Major
• Resolution: Unresolved
• Affects Version/s: 0.12.0
• Component/s: File Formats
• Assignee: Unassigned
• Reporter: Chaoyu Tang
• Created: 19/Dec/13 14:44
• Updated: 14/Apr/14 01:10

Description

We need the support to type union in LazyBinarySerDe, which is required to the join query with any union types in its select values. The reduce values in Join operation is serialized/deserialized using LazyBinarySerDe, otherwise we will see some errors like:

Caused by: java.lang.NullPointerException
at org.apache.hadoop.hive.serde2.objectinspector.ObjectInspectorUtils.getStandardObjectInspector(ObjectInspectorUtils.java:106)
at org.apache.hadoop.hive.serde2.objectinspector.ObjectInspectorUtils.getStandardObjectInspector(ObjectInspectorUtils.java:156)
at org.apache.hadoop.hive.ql.exec.JoinUtil.getStandardObjectInspectors(JoinUtil.java:98)
at org.apache.hadoop.hive.ql.exec.CommonJoinOperator.initializeOp(CommonJoinOperator.java:261)
at org.apache.hadoop.hive.ql.exec.JoinOperator.initializeOp(JoinOperator.java:61)
at org.apache.hadoop.hive.ql.exec.Operator.initialize(Operator.java:360)
at org.apache.hadoop.hive.ql.exec.ExecReducer.configure(ExecReducer.java:150)