Changes in This Release for Oracle Big Data Connectors User's Guide

This preface contains:

Changes in Oracle Big Data Connectors Release 3 (3.1)

The following are changes in Oracle Big Data Connectors User's Guide for Oracle Big Data Connectors Release 3 (3.1).

This table shows the software versions installed with Oracle Big Data Connectors 3.1:

Connector Version
Oracle SQL Connector for HDFS 3.1
Oracle Loader for Hadoop 3.1
Oracle Data Integrator Application Adapter for Hadoop 11.1.7.0
Oracle XQuery for Hadoop 4.0
Oracle R Advanced Analytics for Hadoop 2.4

New Features

Oracle Big Data Connectors support Cloudera's Distribution including Apache Hadoop version 5 (CDH5) and Yet Another Resource Negotiator (YARN). MapReduce programs might require recompiling under YARN.

  • Oracle SQL Connector for Hadoop Distributed File System

  • Oracle Loader for Hadoop

  • Oracle XQuery for Hadoop

    • Support for oxh:println and oxh:println-xml functions

    • Support for libraries located on HDFS through -sharelib command line parameter

  • XML Extension for Hive, support for a new table parameter oxh-default-namespace added

    Note:

    You no longer require Oracle Big Data Appliance to use XML Extension for Hive with Oracle Big Data Connectors.

Deprecated Features

The following features are deprecated in this release, and may be desupported in a future release:

  • Oracle Loader for Hadoop

    • Support for Cloudera's Distribution including Apache Hadoop version 3 (CDH3)

    • Support for Apache Hadoop 1

Changes in Oracle Big Data Connectors Release 3 (3.0)

The following are changes in Oracle Big Data Connectors User's Guide for Oracle Big Data Connectors Release 3 (3.0).

This table shows the software versions installed with Oracle Big Data Connectors 3.0:

Connector Version
Oracle SQL Connector for HDFS 3.0.0
Oracle Loader for Hadoop 3.0.0
Oracle Data Integrator Application Adapter for Hadoop 11.1.7.0
Oracle XQuery for Hadoop 3.0.0
Oracle R Advanced Analytics for Hadoop 2.4

New Features

Oracle Big Data Connectors support Cloudera's Distribution including Apache Hadoop version 5 (CDH5) and Yet Another Resource Negotiator (YARN). MapReduce programs might require recompiling under YARN.

  • Oracle SQL Connector for Hadoop Distributed File System

    • Supports partitioned Hive tables. You can query a partition or a range of partitions, and load only what you need for further analysis into tables in Oracle Database.

      See "Creating External Tables from Hive Tables".

    • Provides two new commands, -drop and -describe, to the command-line tool. These commands facilitate administering the external tables and location files generated by Oracle SQL Connector for HDFS.

      See "Using the ExternalTable Command-Line Tool".

    • Supports new data types introduced in Hive versions 0.12.0 and 0.13.0, and included in CDH5: char, date, decimal(p,s), and varchar.

      See "Data Type Mappings".

  • Oracle Loader for Hadoop

    • Supports partitioned Hive tables, so that you can load one or more partitions into Oracle Database as an alternative to the entire table.

    See "Hive Table Input Format".

  • Oracle XQuery for Hadoop

Deprecated Features

The following features are deprecated in this release, and may be desupported in a future release:

Desupported Features

The following features are no longer supported by Oracle.

  • Oracle SQL Connector for HDFS

    The -publish command is not supported for Hive