jichen20210919 opened a new issue, #6452: URL: https://github.com/apache/paimon/issues/6452
### Search before asking - [x] I searched in the [issues](https://github.com/apache/paimon/issues) and found nothing similar. ### Paimon version When we write rows to arrow format with empty paimon schema,following exception will raise `java.lang.IllegalArgumentException at org.apache.arrow.util.Preconditions.checkArgument(Preconditions.java:122) at org.apache.arrow.vector.VectorSchemaRoot.getVector(VectorSchemaRoot.java:185) at org.apache.paimon.arrow.ArrowUtils.serializeToCStruct(ArrowUtils.java:224) at org.apache.paimon.arrow.vector.ArrowFormatCWriter.toCStruct(ArrowFormatCWriter.java:72) at org.apache.paimon.arrow.vector.ArrowFormatWriterTest.testArrowFormatCWriterWithEmptySchema(ArrowFormatWriterTest.java:292) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)` ### Compute Engine JavaAPI ### Minimal reproduce step try (RootAllocator rootAllocator = new RootAllocator(); BufferAllocator allocator = rootAllocator.newChildAllocator("paimonWriter", 0, Long.MAX_VALUE); ArrowFormatCWriter writer = new ArrowFormatCWriter(emptyschema, 4096, true, allocator)) { for (int i = 0; i < 100; i++) { writer.write(GenericRow.of()); } writer.flush(); ArrowCStruct cStruct = writer.toCStruct(); Assertions.assertThat(cStruct).isNotNull(); writer.release(); } ### What doesn't meet your expectations? It should work as normal. ### Anything else? _No response_ ### Are you willing to submit a PR? - [ ] I'm willing to submit a PR! -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: [email protected] For queries about this service, please contact Infrastructure at: [email protected]
