Release Features - Aster Execution Engine

Teradata Aster® Execution Engine for Aster-on-Hadoop OnlyRelease Notes
Product
Aster Execution Engine
Release Number
7.00.02
Published
July 2017
Language
English (United States)
Last Update
2018-04-17
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Product Category
Software
AX 7.00.02 New Features Description
Metadata Persistence Metadata objects persist after an Aster instance fails, shuts down, or is restarted. See Teradata Aster® Execution Engine Aster Instance User Guide.
Mixed Mode Authentication Allows you to connect to an Aster instance with multiple types of authentication simultaneously. See Teradata Aster® Execution Engine Aster Instance User Guide.
Multi-Level LDAP Authenication For additional security, Aster supports multi-level LDAP authentication. See Teradata Aster® Execution Engine Aster Instance User Guide.
Resilient Tables Metadata objects that enable recovery in case of a failover or Aster instance restart. See Teradata Aster® Execution Engine Aster Instance User Guide.
Workload Management Workload management allocates resources. See Teradata Aster® Execution Engine Aster Instance User Guide.
In-Memory Data Collections (IMDC) Data stores that are available to users of the Aster SQL-MapReduce framework. See Teradata Aster® Developer Guide.
Analytic Functions Aster Analytics files are removed from aster-db-common-07.00.02.00-rxxxx.x86_64.rpm. To install Aster Analytics on an Aster instance running AX 7.00.02, see the Teradata Aster® Analytics Foundation User Guide.
AX 7.00.01.01 New Feature Description
Aster Connectivity to Teradata QueryGrid 2.02 Teradata QueryGrid 2.02 is a data analytics fabric that allows users to initiate a single SQL query that joins data from one or more data sources. See Teradata QueryGrid Installation and User Guide.
QueryGrid 2.0: Aster Connector is not supported in AX 7.00.02. Although QueryGrid 2.0 is supported in earlier AX 7.00 based releases through the QueryGrid 2.02 Aster connector, this feature is removed from all future AX releases and must not be used. For customers who want to connect to Hadoop, Teradata recommends using the QueryGrid 1.0 connector, which is available in AX 7.00.02.
AX 7.00.01 New Features Description
Analytic Functions
See Analytic Functions under AX 7.00.02 New Features for updated information on installing Analytic functions.
The AA 6.21 version of the Aster Analytics functions comes pre-installed with this release. See Teradata Aster® Analytics Foundation User Guide.
Data Storage HDFS is used for data storage. Aster recommends that you do not use Aster to store your data. Input and output data through the Hadoop connection (and optionally, other connectors). For persistence, you can write data with the load_to_hcatalog function. See Teradata Aster® Execution Engine Aster Instance User Guide.
Local Disk Temporary Storage Local disk is used to store temporary data. See Teradata Aster® Execution Engine Aster Instance User Guide.
Metadata Persistence User data does not persist in an Aster instance after a shutdown or restart. Database Administrators can use ncli database ddl_checkpoint_all to create checkpoints of persistable data. See Teradata Aster® Execution Engine Aster Instance User Guide.
Tables
  • Persistence - Aster tables are not permanently persistent. The only types of persistence that are supported are TEMPORARY and ANALYTIC.
  • Storage Format - Columnar storage is not supported for ANALYTIC tables.
  • Compression - Compressed tables or indexes are not supported.
  • Partitioning - Parent/child partitioning done through inheritance is not allowed with TEMPORARY or ANALYTIC tables.
  • Error Logging Tables - You cannot create error logging tables. Errors can be stored directly into system error logging tables.
See Teradata Aster® Execution Engine Aster Instance User Guide.
YARN Yet Another Resource Negotiator (YARN) is the resource management layer for the Apache Hadoop ecosystem that assists with the allocation of resources and the advancement of tasks. See Teradata Aster® Execution Engine Aster Instance Installation Guide and Teradata Aster® Execution Engine Aster Instance User Guide.
asteryarn A command line management tool that is used to manage Aster instances on a supported operating system and Hadoop distribution combination. See Teradata Aster® Execution Engine Aster Instance User Guide.
ncli netconfig Commands These commands enable you to read from and write to the service ports flat file. See Teradata Aster® Execution Engine Aster Instance User Guide.
Remote Hive DDL and DML The run_on_hive function allows you to run DDL and DML statements on Hive from Aster. See Teradata Aster® Execution Engine Aster Instance User Guide.