nirandaperera commented on a change in pull request #10845: URL: https://github.com/apache/arrow/pull/10845#discussion_r698675915
########## File path: cpp/src/arrow/compute/exec/hash_join_node.cc ########## @@ -39,7 +39,7 @@ Status ValidateJoinInputs(const std::shared_ptr<Schema>& left_schema, const std::shared_ptr<Schema>& right_schema, const std::vector<int>& left_keys, const std::vector<int>& right_keys) { - if (left_keys.size() != right_keys.size()) { + if (left_keys.size() != right_keys.size() && left_keys.size() > 0) { Review comment: Sorry I missed this. I added the changes now -- 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: github-unsubscr...@arrow.apache.org For queries about this service, please contact Infrastructure at: us...@infra.apache.org