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From "Hiroshi Ikeda (JIRA)" <j...@apache.org>
Subject [jira] [Created] (HBASE-14874) BufferChain.write is restricted to write just a chunk, but it might be ineffective
Date Tue, 24 Nov 2015 09:25:10 GMT
Hiroshi Ikeda created HBASE-14874:
-------------------------------------

             Summary: BufferChain.write is restricted to write just a chunk, but it might
be ineffective
                 Key: HBASE-14874
                 URL: https://issues.apache.org/jira/browse/HBASE-14874
             Project: HBase
          Issue Type: Improvement
            Reporter: Hiroshi Ikeda
            Priority: Minor


I understand that the restriction is for reducing to create direct buffers inside sun.nio.ch.IOUtil.write
when passing non-direct buffers, but the method seems to prepare a direct buffer for each
non-direct byte buffer. That means it is off the point that BufferChain adjusts the total
size to write.

Of course it depends on VM implementation, and I just find the source of openjdk-7: http://www.docjar.com/html/api/sun/nio/ch/IOUtil.java.html



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