Github user gaborgsomogyi commented on a diff in the pull request: https://github.com/apache/spark/pull/19893#discussion_r155639843 --- Diff: core/src/test/scala/org/apache/spark/SparkFunSuite.scala --- @@ -34,12 +36,53 @@ abstract class SparkFunSuite with Logging { // scalastyle:on + val threadWhiteList = Set( + /** + * Netty related threads. + */ + "netty.*", + + /** + * A Single-thread singleton EventExecutor inside netty which creates such threads. + */ + "globalEventExecutor.*", + + /** + * Netty creates such threads. + * Checks if a thread is alive periodically and runs a task when a thread dies. + */ + "threadDeathWatcher.*", + + /** + * These threads are created by spark when internal RPC environment initialized and later used. + * For more details, see [[org.apache.spark.rpc.RpcEnv]]. + */ + "rpc-client.*", + "rpc-server.*", + "dispatcher-event-loop.*", + + /** + * These threads are created by spark when the BlockManager's BlockTransferService initialized --- End diff -- Removed.
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