/** * rollback Zookeeper update. * * @param env MasterProcedureEnv * @throws IOException */ private void rollbackZKNamespaceManagerChange(final MasterProcedureEnv env) throws IOException { try { DeleteNamespaceProcedure.removeFromZKNamespaceManager(env, nsDescriptor.getName()); } catch (Exception e) { // Ignore exception LOG.debug("Rollback of updateZKNamespaceManager throws exception: " + e); } }