How to Reconfigure Hadoop Settings to a Local Environment


For testing purposes or during migration from one cluster to another, it might be necessary to import Datameer's application database in a different setup. To start that instance and to edit the configuration later, the Hadoop settings need to be reconfigured.


Access Datameer's application database dap on MySQL shell. The table property contains the columns ID, name, and value. Than in the table

UPDATE property SET value = 'LOCAL' WHERE name = 'hadoop.mode';
UPDATE property SET value = '' WHERE name = 'hadoop.customPropertyString';

This update removes the connections and dependencies to the cluster and Datameer starts up in local mode again.