# Unable to connect to ES in MapR MEP3 while able in MapR Mep2 **URL:** \ **Category:** Elasticsearch\ **Created:** [April 20, 2017, 6:25pm UTC](https://discuss.elastic.co/t/unable-to-connect-to-es-in-mapr-mep3-while-able-in-mapr-mep2/83100 "2017-04-20T18:25:46Z")\ **Posts on this page:** 2\ **Page:** 1
**Author:** ![Min\_Qiu](https://avatars.discourse-cdn.com/v4/letter/m/e79b87/32.png) [@Min\_Qiu](https://discuss.elastic.co/u/Min_Qiu)\ **Post date:** [April 20, 2017, 6:25pm UTC](https://discuss.elastic.co/t/unable-to-connect-to-es-in-mapr-mep3-while-able-in-mapr-mep2/83100/1 "2017-04-20T18:25:46Z")
We have a MapR env which MEP2.0 with spark 2.0.1 , let's call EVC2 We have a MapR env which MEP2.0 with spark 2.1.0 , let's call EVC3 we have a spark streaming application, when run in EVC2 it works to use EsSpark to write to ES, while run the same application (with dependency change on the spark to version 2.1 but the elasticsearch-spark-20\_5.2.2 keeps the same) to write to the same ES which is in AWS in EVC3, it alwasy fail with the following error even we set the configuration the same as in EVC2 which is --conf spark.es.net.http.auth.user=XXXX --conf spark.es.net.http.auth.pass=XXXX --conf spark.es.nodes=XXXX --conf spark.es.port=9200 --conf spark.es.nodes.wan.only=true --conf spark.es.net.ssl=true --conf spark.streaming.kafka.consumer.poll.ms=4196 The error is org.elasticsearch.hadoop.EsHadoopIllegalArgumentException: Cannot detect ES version - typically this happens if the network/Elasticsearch cluster is not accessible or when targeting a WAN/Cloud instance without the proper setting 'es.nodes.wan.only' at org.elasticsearch.hadoop.rest.InitializationUtils.discoverEsVersion(InitializationUtils.java:250) at org.elasticsearch.hadoop.rest.RestService.createWriter(RestService.java:546) at org.elasticsearch.spark.rdd.EsRDDWriter.write(EsRDDWriter.scala:58) at org.elasticsearch.spark.rdd.EsSpark$$anonfun$doSaveToEs$1.apply(EsSpark.scala:102) at org.elasticsearch.spark.rdd.EsSpark$$anonfun$doSaveToEs$1.apply(EsSpark.scala:102) at org.apache.spark.scheduler.ResultTask.runTask(ResultTask.scala:70) at org.apache.spark.scheduler.Task.run(Task.scala:86) at org.apache.spark.executor.Executor$TaskRunner.run(Executor.scala:274) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) at java.lang.Thread.run(Thread.java:745) Caused by: org.elasticsearch.hadoop.rest.EsHadoopTransportException: javax.net.ssl.SSLHandshakeException: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target at org.elasticsearch.hadoop.rest.NetworkClient.execute(NetworkClient.java:124) at org.elasticsearch.hadoop.rest.RestClient.execute(RestClient.java:444) at org.elasticsearch.hadoop.rest.RestClient.execute(RestClient.java:424) at org.elasticsearch.hadoop.rest.RestClient.execute(RestClient.java:428) at org.elasticsearch.hadoop.rest.RestClient.get(RestClient.java:154) at org.elasticsearch.hadoop.rest.RestClient.remoteEsVersion(RestClient.java:609) at org.elasticsearch.hadoop.rest.InitializationUtils.discoverEsVersion(InitializationUtils.java:243) ... 10 more Caused by: javax.net.ssl.SSLHandshakeException: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target at sun.security.ssl.Alerts.getSSLException(Alerts.java:192) at sun.security.ssl.SSLSocketImpl.fatal(SSLSocketImpl.java:1949) at sun.security.ssl.Handshaker.fatalSE(Handshaker.java:302) at sun.security.ssl.Handshaker.fatalSE(Handshaker.java:296) at sun.security.ssl.ClientHandshaker.serverCertificate(ClientHandshaker.java:1514) at sun.security.ssl.ClientHandshaker.processMessage(ClientHandshaker.java:216) at sun.security.ssl.Handshaker.processLoop(Handshaker.java:1026) at sun.security.ssl.Handshaker.process\_record(Handshaker.java:961) at sun.security.ssl.SSLSocketImpl.readRecord(SSLSocketImpl.java:1062) at sun.security.ssl.SSLSocketImpl.performInitialHandshake(SSLSocketImpl.java:1375) at sun.security.ssl.SSLSocketImpl.writeRecord(SSLSocketImpl.java:747) at sun.security.ssl.AppOutputStream.write(AppOutputStream.java:123) at java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:82) at java.io.BufferedOutputStream.flush(BufferedOutputStream.java:140) at org.apache.commons.httpclient.HttpConnection.flushRequestOutputStream(HttpConnection.java:828) at org.apache.commons.httpclient.HttpMethodBase.writeRequest(HttpMethodBase.java:2116) at org.apache.commons.httpclient.HttpMethodBase.execute(HttpMethodBase.java:1096) at org.apache.commons.httpclient.HttpMethodDirector.executeWithRetry(HttpMethodDirector.java:398) at org.apache.commons.httpclient.HttpMethodDirector.executeMethod(HttpMethodDirector.java:171) at org.apache.commons.httpclient.HttpClient.executeMethod(HttpClient.java:397) at org.apache.commons.httpclient.HttpClient.executeMethod(HttpClient.java:323) at org.elasticsearch.hadoop.rest.commonshttp.CommonsHttpTransport.execute(CommonsHttpTransport.java:471) at org.elasticsearch.hadoop.rest.NetworkClient.execute(NetworkClient.java:112) ... 16 more Caused by: sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target at sun.security.validator.PKIXValidator.doBuild(PKIXValidator.java:387) at sun.security.validator.PKIXValidator.engineValidate(PKIXValidator.java:292) at sun.security.validator.Validator.validate(Validator.java:260) at sun.security.ssl.X509TrustManagerImpl.validate(X509TrustManagerImpl.java:324) at sun.security.ssl.X509TrustManagerImpl.checkTrusted(X509TrustManagerImpl.java:229) at sun.security.ssl.X509TrustManagerImpl.checkServerTrusted(X509TrustManagerImpl.java:124) at sun.security.ssl.ClientHandshaker.serverCertificate(ClientHandshaker.java:1496) ... 34 more Caused by: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target at sun.security.provider.certpath.SunCertPathBuilder.build(SunCertPathBuilder.java:141) at sun.security.provider.certpath.SunCertPathBuilder.engineBuild(SunCertPathBuilder.java:126) at java.security.cert.CertPathBuilder.build(CertPathBuilder.java:280) at sun.security.validator.PKIXValidator.doBuild(PKIXValidator.java:382) ... 40 more we then installed MapR MEP 3 with spark 2.0.1 but get the same error. Does anybody have a clue? Thanks ---
**Author:** ![system](https://us1.discourse-cdn.com/elastic/original/3X/1/a/1ac57faf039f6b580b3f104ef42a2a89e41014de.png) [@system](https://discuss.elastic.co/u/system)\ **Post date:** [May 18, 2017, 6:37pm UTC](https://discuss.elastic.co/t/unable-to-connect-to-es-in-mapr-mep3-while-able-in-mapr-mep2/83100/2 "2017-05-18T18:37:25Z")
Closed on May 18, 2017, 6:37pm UTC This topic was automatically closed 28 days after the last reply. New replies are no longer allowed.