[PIG-3812] Several clean-ups in PigStats and JobStats

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 0.13.0
• Fix Version/s: 0.13.0
• Assignee: Cheolsoo Park
• Reporter: Cheolsoo Park
• Created: 14/Mar/14 00:48
• Updated: 07/Jul/14 18:07
• Resolved: 18/Mar/14 00:23

Description

While implementing counter support in Pig-on-Tez (PIG-3603), I made several changes to PigStats and JobStats classes. To avoid breaking backward compatibility between 0.13 and 0.13+, I'd like to commit this patch into trunk prior to 0.13 release.

The changes include-

1. Move getHdfsBytes[Read|Written]() from MRPigStatsUtil to PigStatsUtil since these are not MR specific.
2. Move [MAP|REDUCE]_[IN|OUT]PUT_RECORDS from MRPigStatsUtil to PigStatsUtil since Tez MRInput and MROutput also use them.
3. Fix a typo in JobStats#getAvgREduceTime(): REduce -> Reduce.
4. Fix white spaces.