Sqoop, originally created at Cloudera and now on Apache incubator, is a tool designed for efficiently transferring bulk data between Apache Hadoop and structured datastores. You can use Sqoop to import data from external structured datastores into HDFS or related systems like Hive and HBase. Conversely, Sqoop can be used to extract data from Hadoop and export it to external structured datastores such as relational databases and enterprise data warehouses.
To get a better idea of where Apache Sqoop fits, check this video from Hadoop World 2011 (requires registration) which describes key scenarios driving Hadoop and RDBMS integration and reviewes Apache Sqoop project, which besides supporting data movement between Hadoop and any JDBC database, it is also providing an framework which allows developers and vendors to create connectors optimized for specific targets such as Oracle, Netezza etc.
Original title and link: Apache Sqoop Announces First Release ( ©myNoSQL)