Github user NicoK commented on a diff in the pull request: https://github.com/apache/flink/pull/4533#discussion_r153456963 --- Diff: flink-runtime/src/test/java/org/apache/flink/runtime/io/network/netty/PartitionRequestClientHandlerTest.java --- @@ -145,19 +171,29 @@ public void testReceiveBuffer() throws Exception { */ @Test public void testThrowExceptionForNoAvailableBuffer() throws Exception { - final RemoteInputChannel inputChannel = mock(RemoteInputChannel.class); - when(inputChannel.getInputChannelId()).thenReturn(new InputChannelID()); - when(inputChannel.requestBuffer()).thenReturn(null); + final NetworkBufferPool networkBufferPool = new NetworkBufferPool(10, 32, MemoryType.HEAP); + final SingleInputGate inputGate = createSingleInputGate(); + final RemoteInputChannel inputChannel = spy(createRemoteInputChannel(inputGate)); + inputGate.setInputChannel(inputChannel.getPartitionId().getPartitionId(), inputChannel); + try { + inputGate.assignExclusiveSegments(networkBufferPool, 1); - final BufferResponse bufferResponse = createBufferResponse( - TestBufferFactory.createBuffer(), 0, inputChannel.getInputChannelId(), 2); + final BufferResponse bufferResponse = createBufferResponse( + inputChannel.requestBuffer(), 0, inputChannel.getInputChannelId(), 2); - final CreditBasedClientHandler client = new CreditBasedClientHandler(); - client.addInputChannel(inputChannel); + final CreditBasedClientHandler handler = new CreditBasedClientHandler(); + handler.addInputChannel(inputChannel); + + handler.channelRead(mock(ChannelHandlerContext.class), bufferResponse); - client.channelRead(mock(ChannelHandlerContext.class), bufferResponse); + verify(inputChannel, times(1)).onError(any(IllegalStateException.class)); + } finally { + // Release all the buffer resources + inputChannel.releaseAllResources(); --- End diff -- call `inputGate.releaseAllResources();` instead
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