Tsz Wo Nicholas Sze created HDDS-372:
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Summary: There are two buffer copies in ChunkOutputStream
Key: HDDS-372
URL: https://issues.apache.org/jira/browse/HDDS-372
Project: Hadoop Distributed Data Store
Issue Type: Improvement
Components: Ozone Client
Reporter: Tsz Wo Nicholas Sze
Assignee: Tsz Wo Nicholas Sze
Currently, there are two buffer copies in ChunkOutputStream
# from byte[] to ByteBuffer, and
# from ByteBuffer to ByteString.
We should eliminate the ByteBuffer in the middle.
For zero copy io, we should support WritableByteChannel instead of
OutputStream. It won't be done in this JIRA.
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