实时计算 Flink版状态的相关内容

问答 2021-12-08 来自：开发者社区

flink 1.9.1状态持续增大

Hello，我这面用FlinkKafkaConsumer011订阅topic list，在设置过期时间后过期状态没有清理，请问有什么解决办法吗，并且使用双流union过期状态也是不清理，但是单流的和单topic的情况是可以清理的，请问这是bug吗 *来自志愿者整理的flink邮件归档

问答 2021-12-08 来自：开发者社区

Flink CEP 编程中当状态没有到达的时候会将数据保存在哪里呢？

问答 2021-12-08 来自：开发者社区

Flink sql 状态过期后，checkpoint 大小没变化

大家好：版本：1.12.0 方式：flink sql 测试sql： select a.id,b.money,b.createTime from test_state_from a full join test_state_from1 b on a.id=b.id; 问题： test_state_from和test_state_from1 分别插入50万条数据，查看 checkpoint 大小为....

问答 2021-12-07 来自：开发者社区

关于flink状态后端使用Rocksdb序列化问题

目前采用flink on yarn， flink版本是1.7.2，hadoop是2.8.5 现在遇到个问题，假设订单对象Order，因使用了窗口等，所以有状态产生，假设现在要在Order中添加几个新的字段，采用savepoint重启任务，就会报错，看错误信息是反序列化问题（rocksdb默认用的kryo），只能kill掉再重启，导致状态丢失，请问有什么解决办法吗？需求不断变更，肯定会定期增加.....

问答 2021-12-07 来自：开发者社区

FLINK TABLE API 自定义聚合函数UDAF从check point恢复任务报状态序列

大家好：我在使用flink table api 实现group by 聚合操作的时候，自定义了一个UDAF函数，首次在集群上运行的时候是正确的，但是从check point恢复任务的时候报下面错误，但是使用内置的函数就没问题，不知道我该怎么解决呢？ java.lang.RuntimeException: Error while getting state at org.apache.flink.....

问答 2021-12-07 来自：开发者社区

Apache中Flink分布式场景的状态容错是怎么实现容错恢复呢？

问答 2021-12-07 来自：开发者社区

Apache Flink中流处理的超大数据量状态是什么呢？

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实时计算Flink版

阿里云实时计算Flink版(Alibaba Cloud Realtime Compute)，完全兼容开源的Apache Flink，比开源性能提升2～3倍，提供了完整的告警、监控、日志的解决方案、提升开发效率且无运维成本，并有社区专家提供技术支持。

立即开通

产品控制台

产品文档

实时同步

MySQL 到 Hologres

Kafka 到 Hologres

功能对比

开源Flink对比

成本优化

作业自动调优