MapR 5.1 is at End of Life (EOL) and no longer supported. Please see the latest documentation. This documentation is not being updated.

5.1 Reference
This section provides information about development content including MapR-FS and MapReduce development topics and reference content.
- Development Guide
- Reference Guide
  - MapR Control System
  - Hadoop Commands
  - HBase Shell for MapR-DB
    You can manage MapR-DB tables using HBase shell commands and additional HBase shell commands included in the MapR distribution of Hadoop.
  - YARN commands
  - maprcli and REST API Syntax
  - Alarms Reference
  - Utilities
  - Default MapR Configurations
  - Configuration Files
  - MapR Environment
  - MapR Parameters
  - Best Practices
  - Language Support for MapR-DB Tables
  - Glossary
    This section contains defintions for commonly used terms in MapR Converged Data Platform environments.
  - Source Code for MapR Software
- Glossary
  This section contains defintions for commonly used terms in MapR Converged Data Platform environments.

Assign Cluster-Wide Provisionary Space Limit

You can modify standard volume reserve limits by clicking the Assign Cluster-Wide Provisionary Space Limit button.

When you set a reserve limit, you provision a certain amount of space to each volume as a percentage of cluster capacity. You may want to set a reserve limit to free up space that could potentially be unused or allocate more space for replication. As data is written to the volume, available space is automatically allocated. The volume reserve increases up to the reserve limit you set.