Gopal V created HADOOP-10047:
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Summary: Allow Compressor/Decompressor APIs to expose a Direct
ByteBuffer API
Key: HADOOP-10047
URL: https://issues.apache.org/jira/browse/HADOOP-10047
Project: Hadoop Common
Issue Type: New Feature
Components: io
Reporter: Gopal V
Assignee: Gopal V
With the Zero-Copy reads in HDFS (HDFS-5260), it becomes important to perform
all I/O operations without copying data into byte[] buffers or other buffers
which wrap over them.
This is a proposal for adding new DirectCompressor and DirectDecompressor
interfaces to the io.compress, to indicate codecs which want to surface the
direct buffer layer upwards.
The implementation may or may not copy the buffers passed in, but should work
with direct heap/mmap buffers and cannot assume .array() availability.
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