??????Cleaning spark memory

[Ricky]

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------------------ ???????? ------------------
??????: Takeshi Yamamuro <linguin....@gmail.com>
????????: 2016&#24180;6&#26376;11&#26085; 12:15
??????: Cesar Flores <ces...@gmail.com>
????: user <user@spark.apache.org>
????: Re: Cleaning spark memory