mbutrovich commented on code in PR #4267:
URL: https://github.com/apache/datafusion-comet/pull/4267#discussion_r3227491022
##########
spark/src/main/scala/org/apache/comet/CometExecIterator.scala:
##########
@@ -127,7 +127,12 @@ class CometExecIterator(
memoryConfig.memoryLimitPerTask,
taskAttemptId,
taskCPUs,
- keyUnwrapper)
+ keyUnwrapper,
+ // Capture the Spark task thread's TaskContext at `createPlan` time.
Stashed native-side
+ // in the ExecutionContext and passed through the JVM UDF bridge so that
Tokio workers
+ // running JVM UDFs see the real `TaskContext` via their thread-local.
See
+ // `CometUdfBridge.evaluate` and `CometTaskContextShim` for the receive
side.
+ TaskContext.get())
Review Comment:
yes, peeling this off as a separate PR
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