When list children node, I add a watcher, it got error

[TruthBean]

(node:9452) MaxListenersExceededWarning: Possible EventEmitter memory leak detected. 11 notification listeners added. Use emitter.setMaxListeners() to increase limit;

function listChildren(path, callback) {
    client.getChildren(path, (event) => {
        logger.debug('Got watcher event: ' + event);
        if (event === Event.NODE_CHILDREN_CHANGED) {
            listChildren(path, callback);
        }
    }, (error, children, stat) => {
        let version = stat ? stat.version : 'UNKOWN';
        if (error) {
            logger.error('Failed to list children of node: ' + path + ' due to: ' + error + ' in version: ' + version);
            if (error.code === Exception.NO_NODE) callback(null);
            if (error.code === Exception.CONNECTION_LOSS) {
                client.connect();
                listChildren(path, callback);
            }
            callback([]);
        } else {
            logger.debug('Children of node: ' + path + ' in version ' + version + ' are: ' + children + ' .');
            callback(children);
        }
    });
}

[TruthBean]

I got know something, every time when listChildren function is called, event will call registerChildWatcher(), so it may be a issue or not, but it should check the watcher existed before register.

[adodge1]

@TruthBean did you get this figured out? I am getting the same issue.
(node:52825) MaxListenersExceededWarning: Possible EventEmitter memory leak detected. 11 notification listeners added to [EventEmitter]. Use emitter.setMaxListeners() to increase limit.
I am using client.getChildren too for zookeeper.

[davidrac]

Same for me. I'm getting a similar issue.

[sunchuanleihit]

+1