[FLINK-6714] Operator state backend should set user classloader as context classloader when snapshotting

• Type: Bug
• Status: Closed
• Priority: Blocker
• Resolution: Fixed
• Fix Version/s: 1.3.0, 1.4.0
• Component/s: Runtime / State Backends
• Assignee: Tzu-Li (Gordon) Tai
• Reporter: Tzu-Li (Gordon) Tai
• Created: 25/May/17 07:23
• Updated: 26/May/17 08:43
• Resolved: 26/May/17 08:43

Description

Now that the operator state backend creates a deep copy of the state during the synchronous part of async checkpoints, it needs to set the user classloader as the thread context classloader, otherwise serializers that uses serialization for copying will use the wrong classloader when deserializing the copy.

Issue Links

• links to: GitHub Pull Request #3987