大佬，请教下Flink CDC中 full load 阶段如果主键是string类型，需要怎么优化下参数。我测试了pk是整型相同参数下同步很快的？正常 string 类型的pk 我理解只会在chunk划分上比较慢因为要查很多次，我这边也尝试了下单线程 1c3g chunksize： 2048 20480 40960 204800 这几个区间差别好像不是很大。40960 和204800 同....

问答 2023-03-21 来自：开发者社区

flink sql是不是写sql的时候，比如id是String类型，然后我用id = 2这种形势么？

就是flink sql，是不是写sql的时候，比如id是String类型，然后我用id = 2这种方式，必用id = '2'这种形式吗

问答 2022-08-24 来自：开发者社区

flink sql 将 string 通过 cast( 'xxx' as int) 转成 int类型

flink sql 将 string 通过 cast( 'xxx' as int) 转成 int类型，结果从左边变成了右边这样：有人知道为什么吗

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更新时间 2024-05-01 06:49:00

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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。

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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