Hi Dustin, Just write a migration for the Linkd table removals. Yeah, rollbacks aren't necessary for that. There was no logical way to write rollbacks for the column removals either.
-- Seth On 5/21/15 8:44 AM, Dustin Frisch wrote: > Is there anything to do for us if we are going to remove the linkd > tables? > > We do not have to build rollback statements for removing tables as we > are loosing rollback capability anyways, right? > > > Seth Leger <s...@opennms.org> wrote: > >> Hi everyone, >> >> I wanted to give everyone a heads-up that there will be a Liquibase >> migration in OpenNMS 17 that will remove some columns and triggers >> from the database in the ipInterface, ifServices, and outages tables. >> >> These columns and triggers were in place to preserve backwards >> compatibility with older JDBC code that used a node/ipAddr/service >> composite key instead of the simpler numeric primary keys that we use >> with Hibernate. However, since Capsd has been removed and a lot of >> refactoring has been done to remove old JDBC code and replace it with >> Hibernate, we can now get rid of these database columns without >> causing problems. This will increase performance because of the >> reduced number of database calls due to the removal of the triggers. >> >> If you are working in the 'develop' branch and upgrade to >> 17.0.0-SNAPSHOT after the Liquibase migration is committed, the >> migration will remove the database columns. If you want to go back to >> developing on an older version or a branch that does not contain the >> database changes, you will need to have A BACKUP OF YOUR DATABASE that >> you can restore that has the columns and triggers (or you will need to >> install from scratch). Otherwise, the older version of OpenNMS will >> undoubtedly crash because of queries that are expecting those columns >> in the database. >> >> The changes are not yet committed to 'develop' for inclusion in 17 >> but I expect them to pass unit tests today and be ready to merge by >> tomorrow. >> >> Heads up!! >> Seth Leger >> The OpenNMS Group >> >> >> ------------------------------------------------------------------------------ >> One dashboard for servers and applications across >> Physical-Virtual-Cloud Widest out-of-the-box monitoring support with >> 50+ applications Performance metrics, stats and reports that give you >> Actionable Insights Deep dive visibility with transaction tracing >> using APM Insight. >> http://ad.doubleclick.net/ddm/clk/290420510;117567292;y >> _______________________________________________ Please read the >> OpenNMS Mailing List FAQ: >> http://www.opennms.org/index.php/Mailing_List_FAQ >> >> opennms-devel mailing list >> >> To *unsubscribe* or change your subscription options, see the bottom >> of this page: >> https://lists.sourceforge.net/lists/listinfo/opennms-devel ------------------------------------------------------------------------------ One dashboard for servers and applications across Physical-Virtual-Cloud Widest out-of-the-box monitoring support with 50+ applications Performance metrics, stats and reports that give you Actionable Insights Deep dive visibility with transaction tracing using APM Insight. http://ad.doubleclick.net/ddm/clk/290420510;117567292;y _______________________________________________ Please read the OpenNMS Mailing List FAQ: http://www.opennms.org/index.php/Mailing_List_FAQ opennms-devel mailing list To *unsubscribe* or change your subscription options, see the bottom of this page: https://lists.sourceforge.net/lists/listinfo/opennms-devel
