How to monitor Hadoop metrics

This blog post delves into the key metrics that should be monitored to ensure optimal health and performance of a Hadoop cluster. It covers service-oriented monitoring, HDFS metrics, MapReduce counters, YARN metrics, and ZooKeeper metrics. The article provides detailed descriptions of each metric along with recommendations on when to alert based on these metrics. Monitoring these key metrics can help identify potential issues in a timely manner and ensure smooth operation of the Hadoop cluster.