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MapReduce, mail # user - HDFS append overhead


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HDFS append overhead
John Lilley 2013-05-21, 18:52
I am trying to determine if it is feasible for multiple nodes to alternate appends to a shared file in HDFS.
Can someone tell me, what is the overhead of an open/append/close cycle?
If multiple nodes attempt open-for-append at once, the losers queue nicely waiting for the winner to close?
--john