[PIG-2912] Pig should clone JobConf while creating JobContextImpl and TaskAttemptContextImpl in Hadoop23

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 0.9.3, 0.10.1
• Fix Version/s: 0.9.3, 0.11, 0.10.1
• Assignee: Rohini Palaniswamy
• Reporter: Rohini Palaniswamy
• Created: 07/Sep/12 21:37
• Updated: 06/Jan/13 23:57
• Resolved: 10/Sep/12 22:20

Description

There is change in the semantics of
JobContext::JobContext(Configuration, JobID). While in .20, the Config was
cloned, in .23 the Config is adopted (if it's a JobConf). This causes the same
Configuration instance to be written-to for different tables in the same job.

It would affect multi store commands in pig on Hadoop 23/2.0. The
cloning in HadoopShims was part of PIG-2578 but was reverted to other issues.