# NoClassDefFoundError: Could not initialize class org.elasticsearch.common.network.NetworkService
**URL:** https://discuss.elastic.co/t/noclassdeffounderror-could-not-initialize-class-org-elasticsearch-common-network-networkservice/100020
**Category:** Elasticsearch
**Tags:** es-hadoop
**Created:** [September 11, 2017, 8:25am UTC](https://discuss.elastic.co/t/noclassdeffounderror-could-not-initialize-class-org-elasticsearch-common-network-networkservice/100020 "2017-09-11T08:25:06Z")
**Posts on this page:** 3
**Page:** 1
### Author:  [@Kirito940613](https://discuss.elastic.co/u/Kirito940613)
#### Post date: [September 11, 2017, 8:25am UTC](https://discuss.elastic.co/t/noclassdeffounderror-could-not-initialize-class-org-elasticsearch-common-network-networkservice/100020/1 "2017-09-11T08:25:06Z")
public final static TransportClient getClient() {
synchronized (EsUtil.class) {
if(client == null)
try {
```
Settings settings = Settings.builder()
.put("cluster.name", clusterName)
.put("client.transport.sniff", true)
.build();
client = new PreBuiltTransportClient(settings)
.addTransportAddress(new InetSocketTransportAddress(InetAddress.getByName("10.6.80.104"), 9320))
.addTransportAddress(new InetSocketTransportAddress(InetAddress.getByName("10.6.80.119"), 9320));
} catch (UnknownHostException e) {
e.printStackTrace();
}
}
return client;
}
```
I want to submit spark job from local to remote cluster.When i use spark.master =local[\*],it works well.But i change it to my remote cluster uri,it throws exception like topic,anyone else know how to solve?My es-version is 5.3.0 and i have try 5.2.2 but it doesn't work.
---
### Author:  [@james.baiera](https://discuss.elastic.co/u/james.baiera)
#### Post date: [September 12, 2017, 3:40pm UTC](https://discuss.elastic.co/t/noclassdeffounderror-could-not-initialize-class-org-elasticsearch-common-network-networkservice/100020/2 "2017-09-12T15:40:27Z")
This does not look ES-Hadoop related, but rather an issue with the Elasticsearch transport client. Have you thought about using ES-Hadoop for your spark workloads instead?
---
### Author:  [@system](https://discuss.elastic.co/u/system)
#### Post date: [October 10, 2017, 3:40pm UTC](https://discuss.elastic.co/t/noclassdeffounderror-could-not-initialize-class-org-elasticsearch-common-network-networkservice/100020/3 "2017-10-10T15:40:39Z")
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