Stop Map Reassignments Abruptly| Teradata Vantage - Stopping Map Reassignments Abruptly - Analytics Database - Teradata Vantage

Database Administration

Deployment
VantageCloud
VantageCore
Edition
Enterprise
IntelliFlex
VMware
Product
Analytics Database
Teradata Vantage
Release Number
17.20
Published
June 2022
Language
English (United States)
Last Update
2023-11-03
dita:mapPath
pgf1628096104492.ditamap
dita:ditavalPath
qkf1628213546010.ditaval
dita:id
ujp1472240543947
lifecycle
latest
Product Category
Teradata Vantage™
To stop a map reassignment job immediately, call the procedure StopMovesTablesSP and specify Y for the StopQueuedActions parameter. For example:
CALL TDMaps.StopMoveTablesSP('Y',
		 :NumActionsStopped, :NumQueuedActionsStopped);
The ActionHistoryTbl records any already queued actions that are stopped .
If a table group is interrupted during the map reassignment process, related tables may be assigned to different maps and may reside on different AMPs for a long time, slowing down request processing. For this reason, Teradata recommends stopping map reassignments gracefully, allowing groups of related tables to stay together.

Do not stop the map reassignment job by issuing ABORT SESSION LOGOFF. That causes the manager session to hang. Calling StopMoveTablesSP releases the manager session. After running StopMoverSP, you need to manually abort the worker sessions.

For more information on StopMoveTablesSP, including the syntax, see Teradata Vantage™ - SQL Operators and User-Defined Functions, B035-1210.