Data Optimizer extension for Cloudera Manager

Cloudera Manager extensions allow you to deploy and manage third party services like Data Optimizer on a Cloudera cluster. The Data Optimizer extension for Cloudera Manager (CM) defines the Data Optimizer service and its roles for Cloudera Manager. This extension is compatible only with parcel-deployed Cloudera clusters.

The Data Optimizer extension contains a Custom Service Descriptor (CSD) file that defines the Data Optimizer service, the roles it provides, and how the service is managed. For example, the CSD file tells CM which scripts to call to start or stop the roles associated with the service.

You must deploy this CSD file directly to the CM server with root or sudo permissions.

The Data Optimizer extension also includes a parcel file that contains the Data Optimizer code in the form of executable binaries and scripts. Cloudera Manager executes the Data Optimizer code according to the instructions provided in the CSD file whenever the service or roles are started and stopped, or when changing log levels, collecting logs, or enabling/disabling the recovery mode. Deploy the parcel directly to the CM server or download it from a privately-hosted parcel repository.

The Data Optimizer extension for Cloudera Manager contains the following roles:

• Volume

  Instances of the Volume role are added to HDFS datanodes and enable the Data Optimizer tiering capability on those data nodes.

• Volume Monitor

  Instances of the Volume Monitor role are deployed alongside Volume instances and provide proactive monitoring capabilities to ensure that the Volume is healthy, and to generate alerts when necessary.