Github user lianhuiwang commented on the pull request:
https://github.com/apache/spark/pull/1437#issuecomment-49439644
but when broadcoast's size >1G, TorrentBroadcast has a array size exceeds
error.in Utils.serialize() will transfer object to Array[Byte]. when broadcoast
object's size >1G, Array[Byte] is not enough.
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