Hello,  My project try to use the elasticsearch with spark 2 to create an index and populate it after. I use these dependencies :  // https://mvnrepository.com/artifact/org.elasticsearch/elasticsearch-spark-20 val elasticVersion = "6.6.2" libraryDependencies += "org.elasticsearch" %% "elasticsearch-spark-20" % elasticVersion // https://mvnrepository.com/artifact/org.elasticsearch.client/elasticsearch-rest-high-level-client libraryDependencies += "org.elasticsearch.client" % "elasticsearch-rest-high-level-client" % elasticVersion and spark 2  libraryDependencies += "org.apache.spark" %% "spark-core" % "2.4.0" % Provided libraryDependencies += "org.apache.spark" %% "spark-sql" % "2.4.0" % Provided libraryDependencies += "org.apache.spark" %% "spark-hive" % "2.4.0" % Provided When i run it from my local installation of spark 2.4.x i have no problem, but when i launch it on my cloudera manager platform ( CDH 5.16.1 ) with spark 2, i have this exception :    19/10/24 16:20:00 ERROR yarn.ApplicationMaster: User class threw exception: java.lang.NoSuchFieldError: INSTANCE java.lang.NoSuchFieldError: INSTANCE at org.apache.http.impl.nio.conn.PoolingNHttpClientConnectionManager$InternalAddressResolver.<init>(PoolingNHttpClientConnectionManager.java:591) at org.apache.http.impl.nio.conn.PoolingNHttpClientConnectionManager.<init>(PoolingNHttpClientConnectionManager.java:163) at org.apache.http.impl.nio.conn.PoolingNHttpClientConnectionManager.<init>(PoolingNHttpClientConnectionManager.java:147) at org.apache.http.impl.nio.conn.PoolingNHttpClientConnectionManager.<init>(PoolingNHttpClientConnectionManager.java:119) at org.apache.http.impl.nio.client.HttpAsyncClientBuilder.build(HttpAsyncClientBuilder.java:668) at org.elasticsearch.client.RestClientBuilder$2.run(RestClientBuilder.java:240) at org.elasticsearch.client.RestClientBuilder$2.run(RestClientBuilder.java:237) at java.security.AccessController.doPrivileged(Native Method) at org.elasticsearch.client.RestClientBuilder.createHttpClient(RestClientBuilder.java:237) at org.elasticsearch.client.RestClientBuilder.access$000(RestClientBuilder.java:42) at org.elasticsearch.client.RestClientBuilder$1.run(RestClientBuilder.java:208) at org.elasticsearch.client.RestClientBuilder$1.run(RestClientBuilder.java:205) at java.security.AccessController.doPrivileged(Native Method) at org.elasticsearch.client.RestClientBuilder.build(RestClientBuilder.java:205) at org.elasticsearch.client.RestHighLevelClient.<init>(RestHighLevelClient.java:267) at org.elasticsearch.client.RestHighLevelClient.<init>(RestHighLevelClient.java:259) I have no idea why...   thank you for your answers ... View more