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5.2 Application Development
This section contains information related to application development for ecosystem components and MapR products including MapR-DB (binary and JSON), MapR-FS, and MapR Streams.
Ecosystem Components
The following sections provide information about each open source project that MapR supports.
Hue
Configure Hue

MapR 5.2 Documentation

5.2 Application Development
This section contains information related to application development for ecosystem components and MapR products including MapR-DB (binary and JSON), MapR-FS, and MapR Streams.
- Connecting to the Cluster
  Application are often run on nodes that are not part of the MapR Cluster. There are many methods to connect to a MapR cluster; this section will briefly describe each option.
- MapR-FS and Applications
  The following sections provide information about accessing MapR-FS with C and Java applications.
- MapR-DB and Applications
  This section contains information on developing client applications for binary and JSON tables.
- MapR Streams and Applications
  MapR Streams brings integrated publish/subscribe messaging to the MapR Converged Data Platform.
- MapReduce and Applications
  This section contains information associated with developing MapReduce programs or YARN applications.
- Ecosystem Components
  The following sections provide information about each open source project that MapR supports.
  - MapR Expansion Packs
    A MapR Expansion Pack (MEP) provides a set of ecosystem components that work together on one or more MapR cluster versions. Only one version of each ecosystem component is available in each MEP. For example, only one version of Hive and one version of Spark is supported in a MEP.
  - AsyncHBase
  - Cascading
  - Drill
  - Flume
  - HBase
  - HCatalog
  - Hive
  - HttpFS
  - Hue
  - Impala
  - Mahout
  - MapR Streams Clients and Tools
  - Myriad
  - Oozie
  - Pig
  - OpenStack Sahara (Ocata)
  - Sentry
  - Spark
  - Sqoop
  - Storm
  - Third Party Solutions
- Maven and MapR
  This section discusses topics associated with Maven and MapR.
- Developer's Reference
  This section contains in-depth information for the developer.
- API Documentation
  This topic provides links to the locations of MapR's public APIs. These APIs are available for application development purposes.

Configure Hue

Hue is the open source UI that interacts with Apache Hadoop and its ecosystem components.

After you install Hue, perform the following steps to configure Hue:

Complete the general configuration steps. This includes integrating Hue with JobTracker, ResourceManager, and HttpFS.
Perform the steps to integrate each additional component that you want to use with Hue.
- Hive
- HBase or MapR-DB
- Impala
- Oozie
- Spark
- Sqoop2

You may also want to do the following:

Configure Security
Configure DB Query
Configure Hue Interface Authentication

NOTE: The hue.ini file is the main configuration file for running Hue on a cluster. This file is located at /opt/mapr/hue/hue-<version>/desktop/conf/hue.ini. When you update the value of a property in the hue.ini, remove any hashes (##) that appear directly before the property name. You must also restart Hue for these changes to take effect.