public boolean updateConfiguration(final String groupId, final String confStr) {
        Requires.requireTrue(!StringUtils.isBlank(groupId), "Blank group id");
        Requires.requireTrue(!StringUtils.isBlank(confStr), "Blank configuration");

        final Configuration conf = new Configuration();
        if (conf.parse(confStr)) {
            return updateConfiguration(groupId, conf);
        } else {
            LOG.error("Fail to parse confStr: {}", confStr);
            return false;
        }
    }
Update configuration of group in route table.

@param groupId raft group id
@param confStr configuration string
@return true on success
jraft-core/src/main/java/com/alipay/sofa/jraft/RouteTable.java