Hello, Is there any way to get the attempt number in a closure? Seems TaskContext.attemptId actually returns the taskId of a task (see this <https://github.com/apache/spark/blob/master/core/src/main/scala/org/apache/spark/executor/Executor.scala#L181> and this <https://github.com/apache/spark/blob/master/core/src/main/scala/org/apache/spark/scheduler/Task.scala#L47>). It looks like a bug.
Thanks, Yin
