haiyang1987 opened a new pull request, #5735:
URL: https://github.com/apache/hadoop/pull/5735

   
   ### Description of PR
   https://issues.apache.org/jira/browse/HDFS-17044
   
   When NameNode processes DataNode increment or full block report, if block is 
not in the blocks map, it will be added to invalidate and the replica should be 
removed from the data-node, and the block size should be to set NO_ACK, should 
be reduce some useless DataNode block reports.
   


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