[SPARK-3513] Provide a utility for running a function once on each executor - ASF JIRA

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Details

Type: Improvement
Status: Resolved
Priority: Minor
Resolution: Duplicate
Affects Version/s: None
Fix Version/s: None
Component/s: Spark Core
Labels:
None

Description

This is minor, but it would be nice to have a utility where you can pass a function and it will run some arbitrary function once on each each executor and return the result to you (e.g. you could perform a jstack from within the JVM). You could probably hack it together with custom locality preferences, accessing the list of live executors, and mapPartitions.