看官方文档中有介绍说当kafka事务超时时，可能会出现数据丢失的情况，那就是说，Flink没办法完全保证端到端exactly once是么？想请教下社区大佬，我这么理解是正确的吗？一直都听说Flink 写kafka是可以保证端到端exactly once的，看到文档描述有点懵
文档地址： https://nightlies.apache.org/flink/flink-docs-release-1.13/docs/connectors/datastream/kafka/#kafka-producers-and-fault-tolerance 关键字："If the time between Flink application crash and completed restart is larger than Kafka’s transaction timeout there will be data loss (Kafka will automatically abort transactions that exceeded timeout time)."
