[THRIFT-2104] Structs lose binary data when transferred from server to client in Java

• Type: Bug
• Status: Closed
• Priority: Critical
• Resolution: Fixed
• Affects Version/s: 0.9
• Fix Version/s: 0.9.2
• Component/s: Java - Compiler

Environment

Java 1.7

• Assignee: Unassigned
• Reporter: Jeff Nelson
• Created: 29/Jul/13 01:58
• Updated: 10/Jul/14 13:42
• Resolved: 10/Jul/14 13:42

Description

There seems to be an issue where structs lose their binary data when passed from server to client in Java. This can be illustrated using the repro steps below.

1. Create a simple struct that contains a binary field

struct TObject {
        1: required binary data
}

2. Create a simple service that has a method that returns a TObject

service TService {

        TObject get();
}

3. Generate java code for the struct and service
4. Create a server that implements TService.Iface

@Override
	public TObject get() throws TException {
		return new TObject(ByteBuffer.allocate(8).putLong(0));
	}

5. Create a client that calls to get get() function on the server and prints out the capacity of the return TObject's bytebuffer

TTransport transport = new TSocket("localhost", 1111);
transport.open();
TProtocol protocol = new TBinaryProtocol(transport);
TService.Client client = new TService.Client(protocol);
TObject obj = client.get();
System.out.println(obj.bufferForData().capacity());

Expected: the capacity to be 8
Actual: the capacity is 0, which indicates that the data was somehow lost during transmission