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Author: Siddharth <[email protected]>
AuthorDate: Tue Sep 25 13:02:04 2018 -0700
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+# ambari-metrics
+Apache Ambari subproject - Ambari Metrics
+
+Ambari Metrics System ("AMS") is a system for collecting, aggregating, serving
and visualizing daemon and system metrics in Ambari-managed clusters.
+
+The original JIRA Epic for Ambari Metrics System can be found here:
https://issues.apache.org/jira/browse/AMBARI-5707
+First official release of AMS was with Ambari 2.0.0. With metrics repro split,
the aim is to be able to release the sub-project with separate cadence than
Amabri.
+
+
---------------------------------------------------------------------------------------------------------
+| Term | Definition
|
+
---------------------------------------------------------------------------------------------------------
+| Metrics Collector | The standalone server that collects metrics,
aggregates metrics, serves metrics |
+| | from the Hadoop service sinks and the Metrics
Monitor. |
+| Metrics Monitor | Installed on each host in the cluster to collect
system-level metrics and |
+| | forward to the Metrics Collector.
|
+| Metrics Hadoop Sinks | Plug-ins into the various Hadoop components sinks to
send Hadoop metrics to the |
+| | Metrics Collector.
|
+-----------------------------------------------------------------------------------------------------------
+
+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").
+It is a fully distributed collection and aggregation system starting from 2.7.0
+
+Please refer to the wiki for more detailed info:
https://cwiki.apache.org/confluence/display/AMBARI/Metrics
+
