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Liya Fan commented on ARROW-7746: --------------------------------- [~emkornfi...@gmail.com] Sorry. There must be some misunderstanding here. I thought flight was a necessary part for IPC. So I will change the title for this issue, and provide support for the rest issues of IPC (e.g. ArrowStreamWriter/ArrowStreamReader) in ARROW-7610. > [Java] Support large buffer for IPC > ----------------------------------- > > Key: ARROW-7746 > URL: https://issues.apache.org/jira/browse/ARROW-7746 > Project: Apache Arrow > Issue Type: Task > Components: Java > Reporter: Liya Fan > Priority: Major > > The motivation is described in > https://github.com/apache/arrow/pull/6323#issuecomment-580137629. > When the size of the ArrowBuf exceeds 2GB, our flighing library does not work > due to integer overflow. > This is because internally, we have used some data structures which are based > on 32-bit integers. To resolve the problem, we must revise/replace the data > structures to make them support 64-bit integers. > As a concrete example, we can see that when the server sends data through > IPC, an org.apache.arrow.flight.ArrowMessage object is created, and is > wrapped as an InputStream through the `asInputStream` method. In this method, > we use data stuctures like java.io.ByteArrayOutputStream and > io.netty.buffer.ByteBuf, which are based on 32-bit integers (we can observe > that NettyArrowBuf#length and ByteArrayOutputStream#count are both 32-bit > integers). -- This message was sent by Atlassian Jira (v8.3.4#803005)