[TAJO-324] Rename the prefix 'QueryUnit' to Task

• Type: Sub-task
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 0.10.0
• Assignee: Hyunsik Choi
• Reporter: Hyunsik Choi
• Created: 22/Nov/13 01:54
• Updated: 18/Dec/14 04:14
• Resolved: 18/Dec/14 03:57

Description

See the title. I propose the rename as follows:

• org.apache.tajo.master.querymaster.QueryUnit to Task
• org.apache.tajo.master.querymaster.QueryUnitAttempt to TaskAttempt
• tajo.worker.Task to TaskExecution

In addition, I'll change variable names in the same manner to above. If there are no objection, I'll do this. Feel free to suggest ideas.