[SPARK-38683] It is unnecessary to release the ShuffleManagedBufferIterator or ShuffleChunkManagedBufferIterator or ManagedBufferIterator buffers when the client channel's connection is terminated - ASF JIRA

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Details

Type: Improvement
Status: Resolved
Priority: Major
Resolution: Fixed
Affects Version/s: 3.1.0, 3.1.1, 3.1.2, 3.2.0, 3.2.1
Fix Version/s: 3.4.0
Component/s: Shuffle
Labels:
None

Description

It is unnecessary to release the ShuffleManagedBufferIterator or ShuffleChunkManagedBufferIterator or ManagedBufferIterator buffers when the client channel's connection is terminated, to reduce I/O operations and improve performance for the External Shuffle Service.