**Exception:** One or more errors occurred. (Exception of type 'org.apache.zookeeper.KeeperException+NoNodeException' was thrown.)

[radduri]

I am using C# .NetCore 1.0. When I call the createNode I am getting this response object Id = 1, Status = WaitingForActivation, Method = "{null}", Result = "{Not yet computed}" and getting an error like

Exception: One or more errors occurred. (Exception of type 'org.apache.zookeeper.KeeperException+NoNodeException' was thrown.)

Please help me on this.

Regards, Ram

[shayhatsor]

Can you please provide more information? a code sample will be much appreciated. Thanks.

[radduri]

Please find the code below. I am calling the ZooKeeperClient like the below

var data = new ZooKeeperClinet(_zookeperIps, "Company").GetData();

ZooKeeperClient Code

`using System; using System.Collections.Concurrent; using System.Collections.Generic; using System.Linq; using System.Text; using System.Threading.Tasks; using org.apache.zookeeper;

namespace Ipreo.Services.SolrService.Repository { public class ZooKeeperClinet { private readonly string _nodePath; public ZooKeeperClinet(string hostPort, string nodePath) {

        _zk = new ZooKeeper(hostPort, ConnectionTimeOut, NullWatcher.Instance);
        while (_zk.getState() != ZooKeeper.States.CONNECTED)
        {
            Task.Delay(5000).ConfigureAwait(false);
        }

        _nodePath = nodePath;
        _mCurrentRoot = CreateNode(hostPort, "/" + nodePath, CreateMode.PERSISTENT_SEQUENTIAL).Result;

    }
    protected const int ConnectionTimeOut = 400000;
    private string _mCurrentRoot;
    private readonly ZooKeeper _zk;

    public DataResult GetData()
    {
      var data = _zk.getDataAsync("/"+ _nodePath, false).Result;
      var stat = data.Stat;
        return data;
    }

    protected async Task<string> CreateNode(string hostPort, string path, CreateMode createMode)
    {
        var newNode = await _zk.createAsync(path, Encoding.UTF8.GetBytes(path), ZooDefs.Ids.OPEN_ACL_UNSAFE, createMode);
        await _zk.sync("/");
        return newNode;
    }

    protected class NullWatcher : Watcher
    {
        public static readonly NullWatcher Instance = new NullWatcher();
        private NullWatcher() { }
        public override Task process(WatchedEvent @event)
        {
            return Task.Delay(0);
            // nada
        }
    }
}

} `

[radduri]

In GetData method I am getting that error. Please find the stacks trace

at System.Threading.Tasks.Task.ThrowIfExceptional(Boolean includeTaskCanceledExceptions) at System.Threading.Tasks.Task`1.GetResultCore(Boolean waitCompletionNotification) at Ipreo.Services.SolrService.Repository.ZooKeeperClinet.GetData() at Ipreo.Services.SolrService.Repository.Repository.d__5.MoveNext()

[shayhatsor]

There's a bug in your code. Replace the following

var data = _zk.getDataAsync("/"+ _nodePath, false).Result;

with

var data = _zk.getDataAsync(_mCurrentRoot, false).Result;

[radduri]

Thanks for your response. I have done that change but now. the response i am getting is the nodePath string only.

Am I doing any thing wrong?

Regards, Ram

[shayhatsor]

@radduri , can you please elaborate on what you're trying to accomplish ?

[radduri]

@shayhatsor, Seems I am able to get the data from Solr but getting an issue after i moved it to DEV server.

My DEV server has a proxy enabled so request is blocking. Can you please help, how to use proxy with this component.

Regards, Ram

[shayhatsor]

I personally have never used the ZooKeeper client (mine or the java version) with a proxy server. But I think I can provide some insight. The ZK client maintains an open TCP connection to one of the ZK servers (default port is 2181, configurable) of a ZK cluster. So if you configure the proxy server to tunnel TCP connections (e.g. incoming port 2181) to one of the ZK servers, it should work.

[shayhatsor]

@radduri, were you able to resolve the problem ?