MapR 5.2.1 Maintenance Release - April 2017
What's new in Version 5.2.1?
Enhancements to Disk Space Balancer
Since the initial release of Version 5.2.0, the disk space balancer tool has been improved to distribute containers from highly utilized storage pools on one node in a cluster to less utilized storage pools on other nodes in the same cluster. This distribution is done in two phases by first classifying storage pools into different bins (based on their utilization level) and then moving containers from storage pools in the highest utilized bin (the source SP) to suitable storage pools in the lowest utilized bin. These enhancements are present in Version 5.2.0 as well.
For more information, see Disk Space Balancer.
MapR Installer Maintenance Update Option
With MapR 5.2.1, MapR is providing maintenance releases for MapR Core. Customers can use the MapR Installer to perform maintenance updates.
For more information, see Performing a Maintenance Update.
New Options for Applying Patches
In addition to maintenance updates, MapR occasionally makes patches available for specific customer issues. You can use the MapR Installer or MapR Installer Stanzas to apply these patches.
For more information, see Applying a Patch.
Cluster Import Using MapR Installer Stanzas
For MapR 5.2 and later, the MapR Installer can use MapR Installer Stanza commands to import manually installed clusters into the installer database. After the import is completed, you can use the MapR Installer to upgrade, update, or make incremental changes to the cluster.
For more information, see Using probe and import to Generate the Installer Database.
PACC Creation Via mapr-setup.sh
mapr-setup.sh script used to set up the MapR Installer can now be used to create Docker container images for the MapR Persistent Application Client Container (PACC).
For more information, see Creating a MapR PACC Image Using mapr-setup.sh.