MHM (Multiple Hash Maps) - System Emulation Tool

Teradata System Emulation Tool User Guide

Product
System Emulation Tool
Release Number
16.10
Published
May 2017
Language
English (United States)
Last Update
2018-05-07
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B035-2492
lifecycle
previous
Product Category
Teradata Tools and Utilities

Hash Map refers to an array of AMP numbers indexed by the hash bucket. A hash map is used to associate a table with a set of AMPs. Teradata Database, starting from 16.10, can be configured to have multiple Hash Maps. DDL of an object includes the Map Name, indicating on which Hash Map the object is residing (set of AMPS with which the object is associated).