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Ambari Metrics System ("AMS") is a system for collecting, aggregating and serving Hadoop and system metrics in Ambari-managed clusters.

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Following image depicts the high level conceptual architecture of the new Ambari Metrics System:

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The Metrics Collector is daemon that receives data from registered publishers (the Monitors and Sinks). The Collector itself is build using Hadoop technologies such as HBase Phoenix and ATS. The Collector can store data on the local filesystem (referred to as "embedded mode") or use an external HDFS (referred to as "distributed mode").

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