# Unable to run ElasticMR job

**URL:** <https://discuss.elastic.co/t/unable-to-run-elasticmr-job/231830>\
**Category:** Elasticsearch\
**Created:** [May 9, 2020, 10:31am UTC](https://discuss.elastic.co/t/unable-to-run-elasticmr-job/231830 "2020-05-09T10:31:56Z")\
**Posts on this page:** 2\
**Page:** 1

<div class="post-metadata">

**Author:** ![vkg0312](https://avatars.discourse-cdn.com/v4/letter/v/b4bc9f/32.png) [@vkg0312](https://discuss.elastic.co/u/vkg0312)\
**Post date:** [May 9, 2020, 10:31am UTC](https://discuss.elastic.co/t/unable-to-run-elasticmr-job/231830/1 "2020-05-09T10:31:57Z")

</div>

While running a elastic mr job facing HttpConnectionManger not found:  
Got the below error

```
Exception in thread "main" java.lang.NoClassDefFoundError: org/apache/commons/httpclient/HttpConnectionManager
at org.elasticsearch.hadoop.rest.commonshttp.CommonsHttpTransportFactory.create(CommonsHttpTransportFactory.java:40)
at org.elasticsearch.hadoop.rest.NetworkClient.selectNextNode(NetworkClient.java:99)
at org.elasticsearch.hadoop.rest.NetworkClient.<init>(NetworkClient.java:82)
at org.elasticsearch.hadoop.rest.NetworkClient.<init>(NetworkClient.java:58)
at org.elasticsearch.hadoop.rest.RestClient.<init>(RestClient.java:101)
at org.elasticsearch.hadoop.rest.InitializationUtils.discoverClusterInfo(InitializationUtils.java:327)
at org.elasticsearch.hadoop.mr.EsOutputFormat.init(EsOutputFormat.java:262)
at org.elasticsearch.hadoop.mr.EsOutputFormat.checkOutputSpecs(EsOutputFormat.java:235)
at org.apache.hadoop.mapreduce.JobSubmitter.checkSpecs(JobSubmitter.java:279)
at org.apache.hadoop.mapreduce.JobSubmitter.submitJobInternal(JobSubmitter.java:145)
at org.apache.hadoop.mapreduce.Job$11.run(Job.java:1570)
at org.apache.hadoop.mapreduce.Job$11.run(Job.java:1567)
at java.base/java.security.AccessController.doPrivileged(Native Method)
at java.base/javax.security.auth.Subject.doAs(Subject.java:423)
at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1893)
at org.apache.hadoop.mapreduce.Job.submit(Job.java:1567)
at org.apache.hadoop.mapreduce.Job.waitForCompletion(Job.java:1588)
at com.mrdriver.ElasticDriver.run(ElasticDriver.java:53)
at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:76)
at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:90)
at com.mrdriver.ElasticDriver.main(ElasticDriver.java:56)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:566)
at org.apache.hadoop.util.RunJar.run(RunJar.java:244)
at org.apache.hadoop.util.RunJar.main(RunJar.java:158)

```

Caused by: java.lang.ClassNotFoundException: org.apache.commons.httpclient.HttpConnectionManager  
at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:581)  
at java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(ClassLoaders.java:178)  
at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:522)  
... 27 more

---

<div class="post-metadata">

**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\
**Post date:** [June 6, 2020, 10:38am UTC](https://discuss.elastic.co/t/unable-to-run-elasticmr-job/231830/2 "2020-06-06T10:38:15Z")

</div>

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