[PIG-3768] TezCompiler.visitUnion() doesn't add compiled TezOp to phyToTezOpMap

• Type: Sub-task
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: tez-branch
• Fix Version/s: tez-branch
• Component/s: tez
• Assignee: Cheolsoo Park
• Reporter: Cheolsoo Park
• Created: 18/Feb/14 12:06
• Updated: 21/Nov/14 05:58
• Resolved: 18/Feb/14 19:31

Description

When a union alias is referred by another operator such as FRJoin, it causes NPE. Here is an example-

Caused by: java.lang.NullPointerException
    at org.apache.pig.backend.hadoop.executionengine.tez.TezCompiler.visitFRJoin(TezCompiler.java:651)
    ... 26 more