It seems that puppetdb has run itself into a corner. It starts (albeit briefly) and then stops soon afterwards with this error:
2014-04-25 20:38:30,242 ERROR [command-proc-65] [puppetdb.command] [6c141db1-eeac-4c3f-be08-d03e5f445a19] [store report] Retrying after attempt 13, due to: java.sql.SQLIntegrityConstraintViolationException: integrity constraint violation: unique constraint or index violation; CONSTRAINT_RESOURCE_EVENTS_UNIQUE table: RESOURCE_EVENTS
java.sql.SQLIntegrityConstraintViolationException: integrity constraint violation: unique constraint or index violation; CONSTRAINT_RESOURCE_EVENTS_UNIQUE table: RESOURCE_EVENTS
at org.hsqldb.jdbc.Util.sqlException(Unknown Source)
at org.hsqldb.jdbc.Util.sqlException(Unknown Source)
at org.hsqldb.jdbc.JDBCPreparedStatement.fetchResult(Unknown Source)
at org.hsqldb.jdbc.JDBCPreparedStatement.executeUpdate(Unknown Source)
.. lots more stack after that.
How do I go about cleaning this up? All of my agent processes are frozen.