[ https://issues.apache.org/jira/browse/TRAFODION-2723?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Hans Zeller closed TRAFODION-2723. ---------------------------------- > Add check to NATable cache for snapshot info > -------------------------------------------- > > Key: TRAFODION-2723 > URL: https://issues.apache.org/jira/browse/TRAFODION-2723 > Project: Apache Trafodion > Issue Type: Sub-task > Components: sql-cmp > Affects Versions: 2.2-incubating > Environment: any, using snapshot scans > Reporter: Hans Zeller > Assignee: Hans Zeller > Fix For: 2.2-incubating > > > TRAFODION-2716 added code to read snapshot info conditionally. This means > that most NATable cache entries will not have this information. Now, if a > user turns on snapshot scan after accessing some tables, the cache entries > will prevent snapshot scans from happening, or they may create unnecessary > snapshots. > Like it is done for other CQDs that influence NATable cache entries, we need > to invalidate the cache if the TRAF_TABLE_SNAPSHOT_SCAN has gone from NONE to > some value other than NONE. There is no need to check in the other direction, > extra snapshot scan info won't hurt. -- This message was sent by Atlassian JIRA (v6.4.14#64029)