[HIVE-17273] MergeFileTask needs to be interruptible

• Type: Bug
• Status: Patch Available
• Priority: Major
• Resolution: Unresolved
• Affects Version/s: 2.2.0, 3.0.0
• Assignee: Mithun Radhakrishnan
• Reporter: Mithun Radhakrishnan
• Created: 08/Aug/17 20:59
• Updated: 09/Aug/17 01:54

Description

This is an extension to the work done in HIVE-16820 (which made TezTask exit correctly when the job is cancelled.)

If a Hive job involves a MergeFileTask (say ALTER TABLE ... PARTITION ... CONCATENATE), and is cancelled after the merge-task has kicked off, then the merge-task might not be cancelled, and might run through to completion.

The code should check if the merge-job has already been scheduled, and cancel it if required.