[SPARK-48634] Avoid statically initialize threadpool at ExecutePlanResponseReattachableIterator

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 4.0.0
• Fix Version/s: 4.0.0
• Component/s: Connect, PySpark
• Labels: pull-request-available
• Assignee: Hyukjin Kwon
• Reporter: Hyukjin Kwon
• Created: 14/Jun/24 18:15
• Updated: 21/Jun/24 14:23
• Resolved: 19/Jun/24 00:13

Description

Avoid having ExecutePlanResponseReattachableIterator._release_thread_pool to initialize ThreadPool which might be dragged in pickling.

Issue Links

• links to: GitHub Pull Request #46993