vanzin commented on issue #24072: [SPARK-27112] : Create a resource ordering between threads to resolve the deadlocks encountered … URL: https://github.com/apache/spark/pull/24072#issuecomment-472658465 BTW if the "two locks need to be held" thing is really needed in multiple places, might be good to have a helper function, e.g. ``` def withLock[T](fn: => T): T = lock1.synchronized { lock2.synchronized { fn } } ```
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