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OutOfMemoryError brings down DataNode, when DataXceiverServer tries to spawn a new data transfer thread.
HDFS-2573 TestFiDataXceiverServer is failing, not testing OOME
HDFS-9684 DataNode stopped sending heartbeat after getting OutOfMemoryError form DataTransfer thread.
HDFS-4475 OutOfMemory by BPServiceActor.offerService() takes down DataNode