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https://issues.apache.org/jira/browse/HDDS-10283?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Duong updated HDDS-10283:
-------------------------
Summary: Apply zero copy to Ozone client reads chunks (was: Apply
Zero-Copy when Ozone client reads chunks)
> Apply zero copy to Ozone client reads chunks
> --------------------------------------------
>
> Key: HDDS-10283
> URL: https://issues.apache.org/jira/browse/HDDS-10283
> Project: Apache Ozone
> Issue Type: Bug
> Components: Ozone Client
> Reporter: Duong
> Priority: Major
> Labels: performance
>
> Ozone client, or ChunkInputStream, reads chunks via grpc call. The chunk data
> is included in the `ReadChunkResponseProto` serialized by GRPC. By default,
> GRPC serializes bytes data by copying the data it receives from network (in
> the native memory zone) to heap buffers (LiteralByteString). The
> ChunkInputStream uses these buffers to back the read.
> We can apply zero-copy marshaller (ZeroCopyMessageMarshaller) to client reads
> to instruct GRPC to serialize chunks by wrapping the direct buffers of data
> received from the network. This will eliminate the need to allocate extra
> heap buffers when reading data.
>
>
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