szetszwo commented on pull request #296:
URL: https://github.com/apache/incubator-ratis/pull/296#issuecomment-732955407
Another way is to provide a different API for transferring files, say
```
CompletableFuture<DataStreamReply> writeAsync(RandomAccessFile);
```
Then, we may use Netty DefaultFileRegion for zero-copy file transfer.
https://github.com/netty/netty/blob/4.1/example/src/main/java/io/netty/example/file/FileServerHandler.java#L53
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