Kai Zheng created HADOOP-11798:
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             Summary: Native raw erasure coder in XOR codes
                 Key: HADOOP-11798
                 URL: https://issues.apache.org/jira/browse/HADOOP-11798
             Project: Hadoop Common
          Issue Type: Sub-task
            Reporter: Kai Zheng
            Assignee: Kai Zheng


Raw XOR coder is utilized in Reed-Solomon erasure coder in an optimization to 
recover only one erased block which is in most often case. It can also be used 
in HitchHiker coder. Therefore a native implementation of it would be deserved 
for performance gain.



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