What's New in Cloudera Manager Free Edition 4.1.0
Cloudera Manager Free Edition 4.1.0 includes the following new features:
- Support for CDH 4.1 new features. CDH4.1 has introduced a number of new features. Cloudera Manager supports these as follows:
- High Availability using Quorum-based Storage. CDH 4.1 provides Quorum-based Storage (also know as the Quorum Journal Manager or QJM) as an alternative to NFS-mounted storage as the location for keeping the shared edits in a High Availability configuration. You can now select this as the shared edits mechanism when you configure HDFS High Availability.
- JobTracker Recoverability. Provides a configurable option to allow job recovery upon JobTracker restart.
- Support for the Cloudera Impala beta release. Install and manage Impala using Cloudera Manager. See "Installing Impala with Cloudera Manager Free Edition" in Cloudera Manager Free Edition Installtion Guide
- Support for configuring and managing Flume NG. With CDH4.1 or CDH3u5 refresh 2, Flume NG can now be added as a service, and its agents can be configured through Cloudera Manager.
- Host-level Decommissioning. You can now decommission all roles on a host in a single step. HDFS DataNodes, MapReduce TaskTrackers, YARN NodeManagers, and HBase RegionServers can be decommissioned; other roles running on the host are stopped. You can also recommission a host; however, roles are not restarted automatically.
- Customizable service names. You can now provide your own display names for your services. These will then appear in the Cloudera Manager Admin Console UI. Note, however, that the original (internal) service name may appear or be required in certain circumstances, such as in log messages or in the API.
- Usability enhancements:
- Configuration properties that take values in units such as bytes or seconds now allow you to specify the units (e.g. Bytes, Seconds, KiBytes, MiBytes, MSecs, GiBytes and so on).
- More readable installation logs: in case of failure, package installation logs now highlight the step of failure and other errors or warnings.
- Various performance improvements in the UI.
- The automatic restart of roles is now configurable on a role-by-role basis. Previously, every Cloudera Manager-managed process would automatically restart on unexpected failures. Now, when this property is set "off", a role that fails unexpectedly will be left Stopped and Cloudera Manager will not transparently restart it.