Github user XuTingjun commented on the pull request:
https://github.com/apache/spark/pull/8477#issuecomment-135602834
Sorry that I don't declare the problem clearly.
When an app starts with CheckPoint file using [getOrCreate
method](https://github.com/apache/spark/blob/master/streaming/src/main/scala/org/apache/spark/streaming/StreamingContext.scala#L829),
the new AM process will new a SparkContext object, but just using the [old
SparkConf](https://github.com/apache/spark/blob/master/streaming/src/main/scala/org/apache/spark/streaming/StreamingContext.scala#L140),
So the new attemptId set by new AM process doesn't do anything.
Also the appId is the same.
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