Question-6: Which of the following mechanism is used by Telemetry Publisher to collect metrics data?

1. By pulling data from respective service
2. By pushing data from respective service
3. Either of pull and push can be used for each service
4. Pull or Push depend from which service data is being fetched

Answer: 4

Exp: How metrics are collected?

There are two mechanisms by which metrics can be collected

• Pull: As name suggests, Telemetry Publisher pulls diagnostic metrics from Oozie, YARN and Spark periodically. Default configuration is once per minute.
• Push: To push metrics data, agent must be installed for respective service. In case of Hive and Impala, Cloudera Manager Agent pushes, metrics data to the Telemetry Publisher within every 5 seconds after a job finishes.