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ASF GitHub Bot commented on ARROW-1047: --------------------------------------- BryanCutler commented on issue #1259: ARROW-1047: [Java] Add Generic Reader Interface for Stream Format URL: https://github.com/apache/arrow/pull/1259#issuecomment-340606975 Thanks @elahrvivaz, @icexelloss and @wesm ! >What do people feel about having less sub namespaces? I sort of prefer having separate packages for the different readers/writers. There are some supporting files that are specific to certain formats, like `ArrowMagic` and `InvalidArrowFileException`, and I like pushing it down to the feature that uses them. I think users will be more likely to import reader/writer from 1 format for a particular use too. I'm not tied to this though, we can simplify if that's the consensus. >Also maybe JsonFileReader -> ArrowJsonReader for more consistent naming? +1 for me on renaming this ---------------------------------------------------------------- This is an automated message from the Apache Git Service. To respond to the message, please log on GitHub and use the URL above to go to the specific comment. For queries about this service, please contact Infrastructure at: us...@infra.apache.org > [Java] Add generalized stream writer and reader interfaces that are decoupled > from IO / message framing > ------------------------------------------------------------------------------------------------------- > > Key: ARROW-1047 > URL: https://issues.apache.org/jira/browse/ARROW-1047 > Project: Apache Arrow > Issue Type: New Feature > Components: Java - Vectors > Reporter: Wes McKinney > Assignee: Bryan Cutler > Labels: pull-request-available > > cc [~julienledem] [~elahrvivaz] [~nongli] > The ArrowWriter > https://github.com/apache/arrow/blob/master/java/vector/src/main/java/org/apache/arrow/vector/file/ArrowWriter.java > accepts a WriteableByteChannel where the stream is written > It would be useful to be able to support other kinds of message framing and > transport, like GRPC or HTTP. So rather than writing a complete Arrow stream > as a single contiguous byte stream, the component messages (schema, > dictionaries, and record batches) would be framed as separate messages in the > underlying protocol. > So if we were using ProtocolBuffers and gRPC as the underlying transport for > the stream, we could encapsulate components of an Arrow stream in objects > like: > {code:language=protobuf} > message ArrowMessagePB { > required bytes serialized_data; > } > {code} > If the transport supports zero copy, that is obviously better than > serializing then parsing a protocol buffer. > We should do this work in C++ as well to support more flexible stream > transport. -- This message was sent by Atlassian JIRA (v6.4.14#64029)