Release: Amazon Elastic MapReduce on 2012-02-28
This release of Amazon Elastic MapReduce includes support for AWS Identity and Access Management (IAM) in the Amazon EMR console. Improvements for S3DistCp and support for Hive 0.7.1.2 are also included.
Support for IAM in the console
The Amazon EMR console now supports AWS Identity and Access Management (IAM). For more information, go to
Configuring User Permissions.
Improvements for S3DistCp
This release changes the file names generated by the --groupBy parameter of S3DistCp. In addition, you no longer need to
specify --groupBy and --srcPattern simultaneously. For more information, go to
Distributed Copy Using S3DistCp.
Amazon Elastic MapReduce supports Hive 0.7.1.2. Hive 0.7.1.2 modifies the way files are named in Amazon S3 for dynamic partitions.
It prepends file names in Amazon S3 for dynamic partitions with a
unique identifier. Using Hive 0.7.1.2 you can run queries in parallel with set hive.exec.parallel=true.
It also fixes an issue with filter pushdown when accessing Amazon DynamoDB with spare data sets.For more information, go to