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文章 2023-11-20 来自：开发者社区

Flink 指标参数源码解读（读取数量、发送数量、发送字节数、接收字节数等）（下）

2.4 MetricQueryServiceGateway从上一步，可以知道调用了MetricQueryServiceGateway的queryMetrics接口，具体的实现MetricQueryService类的queryMetrics 方法，代码如下：@Override public CompletableFuture<MetricDumpSerialization.MetricSer....

文章 2023-11-20 来自：开发者社区

Flink 指标参数源码解读（读取数量、发送数量、发送字节数、接收字节数等）（上）

01 引言附：Flink源码下载地址在Flink的Web页面，细心的话可以看到监控页面里，有任务的详情，其中里面有详细的监控指标，如下图（发送记录数、接收记录数、发送字节数，接收字节数等）：很多时候，我们都需要 “取出这些数据”，并用在我们的需求上，那么该如何取出这些数据呢？本文来分析下源码。02 源码分析2.1 源码入口在Flink的web页面，按F12查看源码，可以看到：接口地址：http:....

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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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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