[FLINK-28826] Avoid notifying too frequently when recycling buffers for BatchShuffleReadBufferPool

• Type: Sub-task
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 1.16.0
• Fix Version/s: 1.16.0
• Component/s: Runtime / Network
• Labels: pull-request-available
• Assignee: Yuxin Tan
• Reporter: Yuxin Tan
• Created: 05/Aug/22 07:04
• Updated: 07/Aug/22 12:37
• Resolved: 07/Aug/22 12:37

Description

When recycling buffers in BatchShuffleReadBufferPool, the number of buffers may be larger than numBuffersPerRequest, which may cause too frequent notifications that the buffers are already available.

So we should modify the condition of notifications that the buffer is available to solve this problem.

Issue Links

• links to: GitHub Pull Request #20461