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Posted to issues@hbase.apache.org by "stack (JIRA)" <ji...@apache.org> on 2013/10/31 04:59:25 UTC

[jira] [Created] (HBASE-9867) Save on array copies with a subclass of LiteralByteString

stack created HBASE-9867:
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             Summary: Save on array copies with a subclass of LiteralByteString
                 Key: HBASE-9867
                 URL: https://issues.apache.org/jira/browse/HBASE-9867
             Project: HBase
          Issue Type: Improvement
          Components: Protobufs
    Affects Versions: 0.96.0
            Reporter: stack
            Assignee: stack
             Fix For: 0.98.0, 0.96.1


Any time we add a byte array to a protobuf, it'll copy the byte array.

I was playing with the client and noticed how a bunch of CPU and copying was being done just to copy basic arrays doing pb construction.  I started to look at ByteString and then remembered a class Benoit sent me a while back that I did not understand from his new AsyncHBase.  After looking in ByteString it made now sense.  So, rather than copy byte arrays everywhere, do a version of a ByteString that instead wraps the array.



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