Add interfaces for compression codecs to use direct byte buffers
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Key: HADOOP-8258
URL: https://issues.apache.org/jira/browse/HADOOP-8258
Project: Hadoop Common
Issue Type: New Feature
Components: io, native
Affects Versions: 3.0.0
Reporter: Todd Lipcon
Currently, the codec interface only provides input/output functions based on
byte arrays. Given that most of the codecs are implemented in native code, this
necessitates two extra copies - one to copy the input data to a direct buffer,
and one to copy the output data back to a byte array. We should add interfaces
to Decompressor/Compressor that can work directly with direct byte buffers to
avoid these copies.
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