flinkjoin优化

有人知道flink sql里面大表join小表怎么去优化吗，比如sparksql的呢种，#Flink

有人知道flink sql里面大表join小表怎么去优化吗，比如sparksql的呢种，broadcast,将小表缓存进去，大表只需要读一次就可以了，不用shuffle的 #Flink

双流join很耗内存，哪位老哥处理过这种场景，一般需要做哪方面的优化呢？ #Flink

引子流计算中一个常见的需求就是为数据流补齐字段。因为数据采集端采集到的数据往往比较有限，在做数据分析之前，就要先将所需的维度信息补全。比如采集到的交易日志中只记录了商品 id，但是在做业务时需要根据店铺维度或者行业纬度进行聚合，这就需要先将交易日志与商品维表进行关联，补全所需的维度信息。这里所说的维表与数据仓库中的概念类似，是维度属性的集合，比如商品维，地点维，用户维等等。在流计算中，这是一...

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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。

实时同步

功能对比

成本优化