This is the documentation for Cloudera Manager 4.8.3.
Documentation for other versions is available at Cloudera Documentation.

What's New in Cloudera Manager 4.0.1

Cloudera Manager 4.0.1 includes the following new features:Making it easier to deploy and use the platform:

  • Support for both CDH3 and CDH4: You can use Cloudera Manager to manage both CDH3 and CDH4 clusters.

  • Client Configuration Management: To allow Hadoop client users to work with the HDFS, MapReduce, YARN and HBase services you create, Cloudera Manager now automatically deploys zip files that contain the relevant configuration files with the settings from your services. Cloudera Manager also deploys these configurations automatically when you add a service on a host, or when you add a Gateway role on a host.

  • Host inspector: Cloudera Manager verifies that CDH packages are installed, and checks network connectivity and clock synchronization.

  • Installation from local repo: The installation wizard now allows you to install the CDH3 or CDH4 packages either from an internal repository that you set up (requires each host to have access to your internal repository). As in previous releases, you can also download and install the packages from Cloudera's download site (requires Internet access).

  • Multi-cluster management: You can use a single installed instance of Cloudera Manager to manage multiple clusters. For example, you can manage and monitor one cluster running CDH3, and another cluster running CDH4.

  • Making it easier to use the Platform features:

  • (CDH4 Only) Support for HDFS High Availability (HA): Cloudera Manager makes it easy to enable and manage the HDFS HA feature included in CDH4.

  • (CDH4 Only) Support for MapReduce version 2 (also called MRv2 or YARN): Using Cloudera Manager 4, you can enable and manage MapReduce version 2 that is included in CDH4.

      Important:

    The current upstream MRv2 release is not yet considered stable, and could potentially change in non-backwards-compatible ways. Thus the current release of MRv2 should not be considered production-ready.

  • (CDH4 Only) Support for HDFS Federation: Using Cloudera Manager 4, you can enable and manage the HDFS Federation feature that is included in CDH4.

  • (CDH4 Only) Enhanced Kerberos Support for HA and Federation

  • (CDH4 Only) Support for HBase co-processors: Cloudera Manager now supports HBase co-processors that are supported by CDH4.

  • (CDH4 Only) Support for Apache Hadoop HttpFS: Apache Hadoop HttpFS is a service that provides HTTP access to HDFS. You can now add an HttpFS role instance in an HDFS service in Cloudera Manager.

  • Making it easier to tie into existing enterprise technologies:

  • Support for Ubuntu and Debian: Cloudera Manager packages are now available for Ubuntu (Lucid and Precise) and Debian (Squeeze) operating systems.

  • API: A comprehensive set of APIs for the various features is now supported in this version of Cloudera Manager. For more information about the Cloudera Manager API, see the Cloudera Manager API Documentation. To download a Cloudera Manager API example that shows how to integrate with Nagios or other systems, go here.

  • Support for Oracle database: You can now use Oracle as an external database to store information for the Cloudera Manager Server, Activity Monitor, Service Monitor, Report Manager, and Host Monitor.

Additional feature enhancements:

  • Time-stamped data: Cloudera Manager now displays time-stamped data using the time zone of the host where Cloudera Manager is running.

  • Additional automatic configuration and validation checks: Cloudera Manager automatically recommends and validates additional values of configuration properties to save time and reduce operator error.

  • Log Rotation: Support for log rotation and retention: new configuration properties allow specifying maximum size per log file and maximum number of files to retain.

  • Centralized page for viewing all running commands: Every administrator can view a list of all running commands (for example, starting and stopping services) on one central page.

  • Internationalized user interface: The user interface for Cloudera Manager now supports English, German, Spanish, French, Portuguese, Japanese, and Chinese (Simplified).

  • Gateway role: You can add the new Gateway role to a host that does not have any other CDH services installed, and allow Cloudera Manager to install and manage client configurations on that host. This is a convenient way to manage configurations on your CDH clients.

  • Alerting and Service Monitoring: Cloudera Manager includes improved support and ease of use to configure alerts for events and activities. The additional support includes monitoring new metrics in CDH4, heat maps on health checks and resource utilization across all nodes for a service, and added support for alerts on log messages. It is also now easier to integrate with existing alert routing and management tools such as Nagios.

  • Host Monitoring: Cloudera Manager includes new time-series charts on host-level metrics, including CPU, memory, disk usage and network I/O. The new context-specific host information enables you to do better root cause analysis.

  • LDAP authentication: Cloudera Manager now enables administrators and operators to log into the Cloudera Manager Admin Console using their LDAP or Active Directory credentials.

  • Support for killing jobs: You can now kill running jobs by using the Activities tab of the Cloudera Manager Admin Console.

  • File browser and search: You can now browse files by using the Reports tab of the Cloudera Manager Admin Console.

  • Quota Management: You can now allocate and change quotas for HDFS directories based on the number of files and disk space.

  • Automatic event search: Cloudera Manager can now automatically search for events and list them in the Events pane for a service or host.

  • Improved cluster statistics and support experience: Cloudera Manager collects additional metrics for a better support experience.