[IO-286] FastByteArray*Stream implementations to replace syncronized JDK ByteArray*Stream

• Type: New Feature
• Status: Open
• Priority: Minor
• Resolution: Unresolved
• Component/s: Streams/Writers
• Labels: streams synchronized
• Assignee: Unassigned
• Reporter: Paul Loy
• Created: 27/Sep/11 16:00
• Updated: 26/Mar/12 18:45

Description

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.