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6.0 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.
Drill
Drill Drivers
MapR provides Drill ODBC and JDBC drivers that you can download. Drivers are updated periodically to include support for new functionality in Drill.

6.0 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.
- Application Development Process
  Before you start developing applications on MapR’s Converged Data Platform, consider how you will get the data onto the platform, the format it will be stored in, the type of processing or modeling that is required, and how the data will be accessed.
- MapR-FS and Apps
  The following sections provide information about accessing MapR-FS with C and Java applications.
- MapR-DB and Apps
  This section contains information about developing client applications for JSON and binary tables.
- MapR-ES and Apps
  MapR-ES brings integrated publish and subscribe messaging to the MapR Converged Data Platform.
- MapReduce and Apps
  This section contains information associated with developing YARN applications.
- MapR Data Science Refinery
  The MapR Data Science Refinery is an easy-to-deploy and scalable data science toolkit with native access to all platform assets and superior out-of-the-box security.
- MapR Data Fabric for Kubernetes FlexVolume Driver
  This section describes how to use and troubleshoot the MapR Data Fabric for Kubernetes FlexVolume Driver.
- Ecosystem Components
  The following sections provide information about each open source project that MapR supports.
  - MapR Ecosystem Packs
    A MapR Ecosystem 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
    - Drill Tutorial
    - Drill-on-YARN
    - Configuring Drill
    - Working with Drill
    - Securing Drill
      An administrator can install Drill with the default security configuration provided by MapR or manually configure custom security for Drill.
    - Drill Drivers
      MapR provides Drill ODBC and JDBC drivers that you can download. Drivers are updated periodically to include support for new functionality in Drill.
      - Drill JDBC Driver
        MapR provides a downloadable Drill JDBC driver that you can use on all platforms to connect BI tools, such as SQuirreL and Spotfire, to Drill. Drill also includes an embedded JDBC driver.
      - Drill ODBC Driver
        MapR provides a downloadable Drill ODBC driver that you can use on all platforms to connect BI tools, such as Tableau, to Drill.
    - Drill Configuration Files
      The Drill installation includes configuration files with start-up options that you can modify prior to starting Drill.
    - Monitoring Drill Metrics
    - Optimizing Queries with Indexes
      MapR-DB provides a highly scalable key-value database platform on which you can run SQL queries using Drill. As of the 6.0 release of the MapR Converged Data Platform, MapR-DB natively supports indexes on secondary fields in JSON tables.
  - Flume
  - HBase Client and MapR-DB Binary Tables
  - HCatalog
  - Hive
  - HttpFS
  - Hue
  - Impala
  - MapR-ES Clients and Tools
  - Myriad
  - OpenStack Manila
  - Oozie
  - Pig
  - Sentry
  - Spark
  - Sqoop
  - 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
  MapR supports public APIs for MapR-FS, MapR-DB, and MapR-ES. These APIs are available for application development purposes.

Drill Drivers

MapR provides Drill ODBC and JDBC drivers that you can download. Drivers are updated periodically to include support for new functionality in Drill.

Click the following links to access MapR JDBC and ODBC driver information and downloads:

Click the following links to access the latest ODBC and JDBC driver documentation:

Drill ODBC Driver documentation
Drill JDBC Driver documentation

Driver Limitations

When using MapR-SASL with JDBC or ODBC drivers, there is no way to specify the target cluster name as part of the connection parameters. MapR-SASL reads the first entry in the /opt/mapr/conf/mapr-clusters.conf file and assumes it is the target cluster name.

For example, if the mapr-clusters.conf file has an entry for 'cluster1' followed by an entry for 'cluster2' and you want to connect to a node in 'cluster2', authentication fails. As a workaround, manually switch the order of entries in the mapr-clusters.conf file.

(Topic last modified: 2019-02-08)