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From "Li Shengmei" <lisheng...@ict.ac.cn>
Subject About the HDFS_READ/WRITE blocks from namenode to datanode
Date Mon, 08 Oct 2012 07:00:30 GMT
Hi, all

         I read the namenode.log and found there are HDFS_READ/WRITE
operations from namenode to datanode. That is to say, the datanodes read
blocks from namenode. I want to know what kind of blocks that the datanodes
read from namenode? Should the blocks stored in datanodes, shouldn't that? 






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