KafkaRebanlace次数过高问题环境：KafkaServer2.6.xKafkaClientJava2.8.2缘起：最近发现KafkaRebalance次数着实有点多，一天达到了六十多次，感觉不太正常，于是查了下日志发现：Offsetcommitcannotbecompletedsincetheconsumerisnotpartofanactivegroupforautopartitionassignment;itislikelythattheconsumerwaskickedoutofthegroup.大意是某个kakfaclient提交offset失败，因为已经在分组中下线。为什么