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In order to obtain the state of shuffle master, we will add the following methods to shuffle master. Before the job starts running, we will check whether the shuffle master supports taking snapshots(through method supportsBatchSnapshot). If it is not supported, we will disable Job Recovery for jobs. 

Note that it's mainly designed for external/remote shuffle service, the Flink default Netty/TM shuffle is stateless and only needs to be an empty implementation.

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