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6.0 Administration
This section describes how to manage the nodes and services that make up a cluster.
Administering Tables
Administration of the MapR-DB is done primarily via the command line (maprcli) or with the MapR Control System (MCS). Regardless of whether the MapR-DB table is used for binary files or JSON documents, the same types of commands are used with slightly different parameter options. MapR-DB administration is associated with tables, columns and column families, and table regions.
Managing Secondary Indexes
Describes how to manage secondary indexes, including adding, deleting, and listing indexes, setting up your cluster for querying, and troubleshooting index usage.
Listing Secondary Indexes
Describes how to list information about the secondary indexes created on MapR-DB JSON tables.
Viewing Secondary Index Details
Describes how to use MCS to view more specific details on secondary indexes.

6.0 Administration
This section describes how to manage the nodes and services that make up a cluster.
- Administering Users and Clusters
- Administering Nodes
- Administering Volumes
  This section provide information about how to organize and manage data using volumes, a unique feature of MapR clusters.
- Administering Files and Directories
- Administering Tables
  Administration of the MapR-DB is done primarily via the command line (maprcli) or with the MapR Control System (MCS). Regardless of whether the MapR-DB table is used for binary files or JSON documents, the same types of commands are used with slightly different parameter options. MapR-DB administration is associated with tables, columns and column families, and table regions.
  - Managing Tables
    MapR-DB supports two types of table: binary tables and JSON tables. This section covers how to create, edit, and delete tables, as well as how to set parameter values, display parameter values, grant permissions and access, replicate tables, and more using the MapR Control System and the CLI.
  - Managing Column Families and Columns
    This section covers overviews of column families in binary tables and JSON tables, how to create column families, alter them, delete them, set permissions on them, and set and display parameter values.
  - Managing Table Replication
    This section contains topics about setting up table replication and administering existing replicas.
  - Managing Secondary Indexes
    Describes how to manage secondary indexes, including adding, deleting, and listing indexes, setting up your cluster for querying, and troubleshooting index usage.
    - Preparing Clusters for Querying using Secondary Indexes on JSON Tables
      Describes the tasks needed to prepare your environment so you can query MapR-DB JSON tables using secondary indexes.
    - Adding Secondary Indexes on JSON Tables
      Describes how to add secondary indexes on MapR-DB JSON tables.
    - Troubleshooting Secondary Indexes
      Describes how to debug and troubleshoot usage of secondary indexes.
    - Listing Secondary Indexes
      Describes how to list information about the secondary indexes created on MapR-DB JSON tables.
      - Viewing Secondary Index Details
        Describes how to use MCS to view more specific details on secondary indexes.
    - Removing Secondary Indexes on JSON Tables
      Describes how to remove secondary indexes that are no longer needed.
  - Administering Change Data Capture
    This topic covers the MCS and maprcli tools for managing the Change Data Capture (CDC) feature.
  - Indexing MapR-DB Binary Tables with Elasticsearch
    As of with MapR 6.0, MapR-DB Elastic Search integration capability is deprecated and no longer available in the MapR-DB product.
- Administering Streams
- Administering MapR Gateways
  A MapR gateway mediates one-way communication between a source MapR cluster and a destination cluster. You can replicate MapR-DB tables (binary and JSON) and MapR-ES streams. MapR gateways also apply updates from JSON tables to their secondary indexes and propagate Change Data Capture (CDC) logs.
- Administering Services
- Monitoring the Cluster
  This section describes how to monitor the health and performance of a MapR cluster.
- Configuring Security
  Describes how to configure MapR security and manage secure clusters.
- Managing Secure Clusters
  Provides procedures that will enable you to use MapR clusters securely.
- Administering the MapR Data Access Gateway
  The MapR Data Access Gateway is a service that acts as a proxy and gateway for translating requests between lightweight client applications and the MapR cluster. This section describes considerations when upgrading the service, how to modify configuration settings, and how to administer and manage the service.
- Planning for High Availability
- Administrator's Reference
  This section contains in-depth reference information for the administrator.
- Troubleshooting Cluster Administration
- Best Practices for Backing Up MapR Information

Viewing Secondary Index Details

Describes how to use MCS to view more specific details on secondary indexes.

About this task

You can view secondary index details using the MapR Control System.

Procedure

Go to the Indexes tab in the table information page for the JSON table.
Click the name of the index to display the details.
The Details pane displays the following:

SETTINGS

Displays the index name, whether or not the index is hashed, and if hashed, the number of hashed partitions.

FIELDS COVERED

The fields in the JSON table that are indexed, but not used for ordering.

FIELDS INDEXED

The fields in the JSON table that are indexed and used for ordering.
Click X to close the Details pane and return to the list of indexes.

(Topic last modified: 2018-07-23)