Ambari Alerts - Namenode heap source code

[#1]

Hi,

Can any help me on finding source code of Namenode/Resourcemanager/datanode heap in Ambari alerts

[#2]

@rmr1989

Heap Alerts are Available for NameNode & DataNodes by default (not for Resourcemanager).

You can find it in the following locations:

NameNode: (they are of "type": "SCRIPT" alert, and the following scripts are used)

https://github.com/apache/ambari/blob/trunk/ambari-server/src/main/resources/common-services/HDFS/2....

https://github.com/apache/ambari/blob/trunk/ambari-server/src/main/resources/common-services/HDFS/3....

.

DataNode: (It's a "type": "METRIC" kind of alert) Which uses the JMX. It checks the DataNode JMXServlet for the MemHeapUsedM and MemHeapMaxM properties.

https://github.com/apache/ambari/blob/trunk/ambari-server/src/main/resources/common-services/HDFS/2....

To know more about SCRIPT or METRIC type alerts please refer to https://docs.hortonworks.com/HDPDocuments/Ambari-2.5.1.0/bk_ambari-operations/content/alert_types.ht...

.

[#3]

Thank you...

[#4 · Accepted solution]

There are several alerts which cover heap. For example, if you wanted to see the raw DataNode heap value, then you'd check the metric alert definition for it:

https://github.com/apache/ambari/blob/trunk/ambari-server/src/main/resources/common-services/HDFS/2....

For NameNode, we don't alert on heap directly but we measure average heap deviation values:

https://github.com/apache/ambari/blob/trunk/ambari-server/src/main/resources/common-services/HDFS/2....

https://github.com/apache/ambari/blob/trunk/ambari-server/src/main/resources/common-services/HDFS/2....

[#5]

Thank you..