[FLINK-25653] Move buffer recycle in SortMergeSubpartitionReader out of lock to avoid deadlock

• Type: Sub-task
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 1.13.5, 1.14.3
• Fix Version/s: 1.14.4, 1.15.0, 1.13.7
• Component/s: Runtime / Network
• Labels: pull-request-available
• Assignee: Yuxin Tan
• Reporter: Yingjie Cao
• Created: 14/Jan/22 07:27
• Updated: 04/Feb/22 11:02
• Resolved: 04/Feb/22 11:02

Description

For the current sort-shuffle implementation, the different lock order in SortMergeSubpartitionReader and SortMergeResultPartitionReadScheduler can cause deadlock. To solve the problem, we can move buffer recycle in SortMergeSubpartitionReader out of the lock.

Issue Links

• links to: GitHub Pull Request #18551