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From "Henri Yandell (Commented) (JIRA)" <>
Subject [jira] [Commented] (IO-286) FastByteArray*Stream implementations to replace syncronized JDK ByteArray*Stream
Date Thu, 10 Nov 2011 18:54:51 GMT


Henri Yandell commented on IO-286:

Reminder that you said "Patch to follow" :)
> FastByteArray*Stream implementations to replace syncronized JDK ByteArray*Stream
> --------------------------------------------------------------------------------
>                 Key: IO-286
>                 URL:
>             Project: Commons IO
>          Issue Type: New Feature
>          Components: Streams/Writers
>            Reporter: Paul Loy
>            Priority: Minor
>              Labels: streams, synchronized
>   Original Estimate: 24h
>  Remaining Estimate: 24h
> In CASSANDRA-2820 I reintoduced the FastByteArrayInputStream and FastByteArrayOutputStream
to cassandra. These steams are un-synchronized versions of the Apache Harmony ByteArrayInputStream
and ByteArrayOutputStream respectively.
> During my own testing of the streams I found a big difference in the performance of the
standard JDK BA*S steams and the FBA*S streams on most JREs. Then cassandra load testing also
showed an up to 10% improvement in cassandra performance using these streams.
> Then Thrift has TByteArrayOutputStream which contains a way to get the underlying byte[]
buffer without a deep copy that would probably be a good further enhancement.
> Patch to follow.

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