[jira] [Created] (HDFS-8902) Uses ByteBuffer on heap or direct ByteBuffer according to used erasure coder in striping read (position and stateful)

Mon, 17 Aug 2015 06:32:15 -0700 

Kai Zheng created HDFS-8902:
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             Summary: Uses ByteBuffer on heap or direct ByteBuffer according to 
used erasure coder in striping read (position and stateful)
                 Key: HDFS-8902
                 URL: https://issues.apache.org/jira/browse/HDFS-8902
             Project: Hadoop HDFS
          Issue Type: Sub-task
            Reporter: Kai Zheng
            Assignee: Kai Zheng


We would choose ByteBuffer on heap or direct ByteBuffer according to used 
erasure coder in striping read (position and stateful), for performance 
consideration. Pure Java implemented coder favors on heap one, though native 
coder likes more direct one, avoiding data copy.



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