求个大佬看一哈 Flink CDC这个问题，使用savepoint 启动，然后加了新表，同步快照的时候，同步到一部分后就仿佛停了一样，既不同步快照，又不同步binlog，也不报错，等了几个小时都这样，仿佛这段时间啥都没干https://github.com/ververica/flink-cdc-connectors/issues/2105，flink 1.14.2 flink CDC ...

问答 2023-05-01 来自：开发者社区

我在用flink cdc的从oracle同步历史数据到doris，请教一下存量数据是先全部拉到内存，

我在用flink cdc的从oracle同步历史数据到doris，请教一下存量数据是先全部拉到内存，拉完后再从内存存入doris吗？小数据量的时候没有问题，当我拉一个大表（2千万数据量，2个G大小）历史数据的时候，跑3-5分钟就报错了，怀疑是不是资源问题。有大佬指点一下吗。

问答 2023-05-01 来自：开发者社区

请教各位大佬，flink cdc同步mysql数据到iceberg，iceberg有50个表，然后要

请教各位大佬，flink cdc同步mysql数据到iceberg，iceberg有50个表，然后要对这50个表的小文件进行重写，怎么操作啊？我看官网有一段代码，我照搬过来后发现有问题

问答 2023-05-01 来自：开发者社区

各位大佬，麻烦问一下，Flink CDC使用SQL同步的时候，mysql同步到es中，需要同步多个索

各位大佬，麻烦问一下，Flink CDC使用SQL同步的时候，mysql同步到es中，需要同步多个索引，是不是一个索引对应一个insert语句，flink也就启动一个Job

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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。

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MySQL 到 Hologres

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功能对比

开源Flink对比

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作业自动调优