[FLINK-5085] Execute CheckpointCoodinator's state discard calls asynchronously

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 1.1.3, 1.2.0
• Fix Version/s: 1.1.4, 1.2.0
• Component/s: Runtime / State Backends
• Assignee: Till Rohrmann
• Reporter: Till Rohrmann
• Created: 17/Nov/16 00:25
• Updated: 22/Nov/16 22:11
• Resolved: 22/Nov/16 22:11

Description

The CheckpointCoordinator discards under certain circumstances pending checkpoints or state handles. These discard operations can involve a blocking IO operation if the underlying state handle refers to a file which has to be deleted. In order to not block the calling thread, we should execute these calls in a dedicated IO executor.

Issue Links

• links to: GitHub Pull Request #2825
• links to: GitHub Pull Request #2826