liyafan82 commented on a change in pull request #8963:
URL: https://github.com/apache/arrow/pull/8963#discussion_r551867296
##########
File path:
java/flight/flight-core/src/test/java/org/apache/arrow/flight/TestBasicOperation.java
##########
@@ -317,6 +325,71 @@ private void test(BiConsumer<FlightClient,
BufferAllocator> consumer) throws Exc
}
}
+ /** ARROW-10962: accept FlightData messages generated by Protobuf (which can
omit empty fields). */
+ @Test
+ public void testProtobufRecordBatchCompatibility() throws Exception {
+ final Schema schema = new
Schema(Collections.singletonList(Field.nullable("foo", new ArrowType.Int(32,
true))));
+ try (final BufferAllocator allocator = new
RootAllocator(Integer.MAX_VALUE);
+ final VectorSchemaRoot root = VectorSchemaRoot.create(schema,
allocator)) {
+ final VectorUnloader unloader = new VectorUnloader(root);
+ root.setRowCount(0);
+ final MethodDescriptor.Marshaller<ArrowMessage> marshaller =
ArrowMessage.createMarshaller(allocator);
+ final ByteArrayOutputStream baos = new ByteArrayOutputStream();
+ try (final ArrowMessage message = new
ArrowMessage(unloader.getRecordBatch(), null, new IpcOption())) {
+ Assert.assertEquals(ArrowMessage.HeaderType.RECORD_BATCH,
message.getMessageType());
+ try (final InputStream serialized = marshaller.stream(message)) {
+ final byte[] buf = new byte[1024];
+ while (true) {
+ int read = serialized.read(buf);
+ if (read < 0) {
+ break;
+ }
+ baos.write(buf, 0, read);
+ }
+ }
+ }
+ final byte[] serializedMessage = baos.toByteArray();
+ final Flight.FlightData protobufData =
Flight.FlightData.parseFrom(serializedMessage);
+ Assert.assertEquals(0, protobufData.getDataBody().size());
+ // Should not throw
+ final ArrowRecordBatch rb =
+ marshaller.parse(new
ByteArrayInputStream(protobufData.toByteArray())).asRecordBatch();
+ Assert.assertEquals(rb.computeBodyLength(), 0);
+ }
+ }
+
+ /** ARROW-10962: accept FlightData messages generated by Protobuf (which can
omit empty fields). */
+ @Test
+ public void testProtobufSchemaCompatibility() throws Exception {
+ final Schema schema = new
Schema(Collections.singletonList(Field.nullable("foo", new ArrowType.Int(32,
true))));
+ try (final BufferAllocator allocator = new
RootAllocator(Integer.MAX_VALUE)) {
+ final MethodDescriptor.Marshaller<ArrowMessage> marshaller =
ArrowMessage.createMarshaller(allocator);
+ final ByteArrayOutputStream baos = new ByteArrayOutputStream();
+ Flight.FlightDescriptor descriptor = FlightDescriptor.command(new
byte[0]).toProtocol();
+ try (final ArrowMessage message = new ArrowMessage(descriptor, schema,
new IpcOption())) {
Review comment:
Do we need to check the message body here?
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