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Liaoliang daily Big Data quotes Spark 0019 (2015.11.10 in Chongqing)

Source: Internet
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The task in park is divided into Shufflemaptask and resulttask two types, and the tasks inside the last stage of the DAG in Spark are resulttask, and all the rest of the stage (s) Are internally shufflemaptask, the resulting task is driver sent to the executor that is already started to perform the specific calculation task, and the implementation is done in the Taskrunner.run method.


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Liaoliang daily Big Data quotes Spark 0019 (2015.11.10 in Chongqing)

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