mingmwang commented on issue #4230: URL: https://github.com/apache/arrow-datafusion/issues/4230#issuecomment-1316384866
The root cause is that, for Left Out join, for each partition of the right side, they are running independently, each of them constructs the `HashJoinStream` and has the `visited_left_side` data structure, each of them will try to produce the unmatched right side and fill with null, which will cause duplications. -- 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]
