[FLINK-8781] Try to reschedule failed tasks to previous allocation

• Type: New Feature
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 1.5.0
• Fix Version/s: 1.5.0
• Component/s: Runtime / Coordination
• Assignee: Stefan Richter
• Reporter: Stefan Richter
• Created: 26/Feb/18 13:20
• Updated: 28/Feb/19 14:31
• Resolved: 26/Feb/18 14:35

Description

For local recovery, we need to enhance the scheduler so that it always tries to reschedule tasks to their previous location under failures. In particular, tasks that lost their allocation should not take away the previous allocations from other tasks.