Hi, all: When we consume multiplue topic in one flinkKafkaConsumer, each topic partition count is less than the parallelism of the consumer, there is a problem we encounted is that, currently the partitionAssigner can evenly assign partition of one topic to subtask, but the assignment process is indepent between topic, so finally , we get some subtasks is in charge of much more partitions while some subtask is total free! To slow this issuse, i have reported the issue by https://issues.apache.org/jira/browse/FLINK-22840. I worked on this issue by add one assign strategy wich can deal with this requirement , and want to contibue to flink guys! Is there someone can talk about this issuce with me ? -- 顺祺! 徐小龙 同济大学软件学院 上海市曹安公路4800号济事楼508 201804 电话/传真:13671633451 E-MAIL:xiaolongsy2...@163.com