MapR 5.0 Documentation : Configure the New Version

After a successful upgrade, administrators have the option to enable new features that are not enabled by default.

These features are enabled by default when you use the MapR Installer to upgrade your cluster.

Based on the version that you upgrade from, you can choose to enable the following features:  

Once you have enabled the features that you require, run your simple and non-trivial health checks to verify cluster health. 

Auditing (new feature as of version 5.0)

The auditing features in MapR let you log audit records of cluster-administration operations and operations on directories, files, and tables.

To enable support for MapR auditing, issue the following command :

maprcli config save -values {"mfs.feature.audit.support":"1"}

This feature is automatically enabled with a fresh install.

Volume Upgrade (new feature as of version 5.0)

 To enable support for promotable mirrors on both old-format and new-format volumes, issue the following commands:

# maprcli config save -values {mfs.feature.volume.upgrade:1}
# maprcli config save -values {mfs.feature.rwmirror.support:1}

 The rwmirror.support feature is automatically enabled with a fresh install.

Table Replication (new feature as of version 4.1)

Issue the following command to enable support for MapR-DB table replication:

# maprcli config save -values {mfs.feature.db.repl.support:1}
This feature is automatically enabled with a fresh install.

Promotable Mirror Volumes (new feature as of version 4.0.2)

Issue the following command to enable support for promotable mirror volumes:

# maprcli config save -values {mfs.feature.rwmirror.support:1}

This feature is automatically enabled with a fresh install.

Reduce On-Disk Container Size (new feature as of version 4.0.2)

Issue the following command to reduce the space required on-disk for each container:

# maprcli config save -values {cldb.reduce.container.size:1}

The reduction of the on-disk container size will take effect after the CLDB service restarts or fails over.

After enabling this feature on a cluster with more than a million containers, it may take some time for the initial failover to complete because the CLDB will re-write container location tables and storage pool container map tables. However, this delay will not reoccur with any subsequent failovers

This feature is automatically enabled with a fresh install.

Bulk Loading of Data to MapR-DB Tables (new feature as of version 3.1.1)

When you upgrade from MapR version 3.1 or earlier, issue the following commands to enable support for bulk loading of data to MapR-DB tables:

# maprcli config save -values {mfs.feature.db.bulkload.support:1}

This feature is automatically enabled with a fresh install.

Access Control Expressions and Table Region Merges (new feature as of version 3.1)

When you upgrade from MapR version 3.0.x, issue the following commands to enable support for Access Control Expressions (ACEs) and table region merge:

# maprcli config save -values {mfs.feature.db.ace.support:1}
# maprcli config save -values {mfs.feature.db.regionmerge.support:1}

These features are automatically enabled with a fresh install or when you upgrade from a version earlier than 3.0.x.

After enabling ACEs for MapR tables, table access is enforced by table ACEs instead of the file system. As a result, all newly created tables are owned by root and have their mode bits set to 777.

After enabling security features, issue the following command to enable encryption of network traffic to or from a file, directory, or MapR-DB table:

# maprcli config save -values {mfs.feature.filecipherbit.support:1}

Clusters with active security features will experience job failure until this configuration value is set.

 


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