Error while connecting to Elastic Search

I am trying the latest version of Dremio 2.x connecting to an Elastic Search cluster 2.x version. but getting an error. Here is the error I am seeing in my server.log

2018-06-18 17:27:30,830 [main] INFO com.dremio.dac.server.WebServer - Started on http://localhost:9047
2018-06-18 17:29:19,111 [qtp1598329273-198] WARN c.dremio.exec.catalog.PluginsManager - Exception while shutting down source.
java.lang.NullPointerException: null
at com.dremio.exec.catalog.ManagedStoragePlugin.close(ManagedStoragePlugin.java:552) ~[dremio-sabot-kernel-2.0.5-201806021755080191-767cfb5.jar:2.0.5-201806021755080191-767cfb5]
at com.dremio.exec.catalog.PluginsManager.deleteSource(PluginsManager.java:287) ~[dremio-sabot-kernel-2.0.5-201806021755080191-767cfb5.jar:2.0.5-201806021755080191-767cfb5]
at com.dremio.exec.catalog.CatalogServiceImpl.createOrUpdateSource(CatalogServiceImpl.java:627) [dremio-sabot-kernel-2.0.5-201806021755080191-767cfb5.jar:2.0.5-201806021755080191-767cfb5]
at com.dremio.exec.catalog.CatalogServiceImpl.createSource(CatalogServiceImpl.java:376) [dremio-sabot-kernel-2.0.5-201806021755080191-767cfb5.jar:2.0.5-201806021755080191-767cfb5]
at com.dremio.exec.catalog.CatalogServiceImpl.access$600(CatalogServiceImpl.java:100) [dremio-sabot-kernel-2.0.5-201806021755080191-767cfb5.jar:2.0.5-201806021755080191-767cfb5]
at com.dremio.exec.catalog.CatalogServiceImpl$SourceModifier.createSource(CatalogServiceImpl.java:946) [dremio-sabot-kernel-2.0.5-201806021755080191-767cfb5.jar:2.0.5-201806021755080191-767cfb5]
at com.dremio.exec.catalog.CatalogImpl.createSource(CatalogImpl.java:529) [dremio-sabot-kernel-2.0.5-201806021755080191-767cfb5.jar:2.0.5-201806021755080191-767cfb5]
at com.dremio.exec.catalog.DelegatingCatalog.createSource(DelegatingCatalog.java:182) [dremio-sabot-kernel-2.0.5-201806021755080191-767cfb5.jar:2.0.5-201806021755080191-767cfb5]
at com.dremio.dac.service.source.SourceService.registerSourceWithRuntime(SourceService.java:147) [dremio-dac-backend-2.0.5-201806021755080191-767cfb5.jar:2.0.5-201806021755080191-767cfb5]
at com.dremio.dac.service.source.SourceService.registerSourceWithRuntime(SourceService.java:138) [dremio-dac-backend-2.0.5-201806021755080191-767cfb5.jar:2.0.5-201806021755080191-767cfb5]
at com.dremio.dac.service.source.SourceService.registerSourceWithRuntime(SourceService.java:134) [dremio-dac-backend-2.0.5-201806021755080191-767cfb5.jar:2.0.5-201806021755080191-767cfb5]
at com.dremio.dac.resource.PutSourceResource.putSource(PutSourceResource.java:80) [dremio-dac-backend-2.0.5-201806021755080191-767cfb5.jar:2.0.5-201806021755080191-767cfb5]
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_131]
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:1.8.0_131]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_131]
at java.lang.reflect.Method.invoke(Method.java:498) ~[na:1.8.0_131]
at org.glassfish.jersey.server.model.internal.ResourceMethodInvocationHandlerFactory$1.invoke(ResourceMethodInvocationHandlerFactory.java:81) [jersey-server-2.25.1.jar:na]
at org.glassfish.jersey.server.model.internal.AbstractJavaResourceMethodDispatcher$1.run(AbstractJavaResourceMethodDispatcher.java:144) [jersey-server-2.25.1.jar:na]
at org.glassfish.jersey.server.model.internal.AbstractJavaResourceMethodDispatcher.invoke(AbstractJavaResourceMethodDispatcher.java:161) [jersey-server-2.25.1.jar:na]
at org.glassfish.jersey.server.model.internal.JavaResourceMethodDispatcherProvider$TypeOutInvoker.doDispatch(JavaResourceMethodDispatcherProvider.java:205) [jersey-server-2.25.1.jar:na]
at org.glassfish.jersey.server.model.internal.AbstractJavaResourceMethodDispatcher.dispatch(AbstractJavaResourceMethodDispatcher.java:99) [jersey-server-2.25.1.jar:na]
at org.glassfish.jersey.server.model.ResourceMethodInvoker.invoke(ResourceMethodInvoker.java:389) [jersey-server-2.25.1.jar:na]
at org.glassfish.jersey.server.model.ResourceMethodInvoker.apply(ResourceMethodInvoker.java:347) [jersey-server-2.25.1.jar:na]
at org.glassfish.jersey.server.model.ResourceMethodInvoker.apply(ResourceMethodInvoker.java:102) [jersey-server-2.25.1.jar:na]
at org.glassfish.jersey.server.ServerRuntime$2.run(ServerRuntime.java:326) [jersey-server-2.25.1.jar:na]
at org.glassfish.jersey.internal.Errors$1.call(Errors.java:271) [jersey-common-2.25.1.jar:na]
at org.glassfish.jersey.internal.Errors$1.call(Errors.java:267) [jersey-common-2.25.1.jar:na]
at org.glassfish.jersey.internal.Errors.process(Errors.java:315) [jersey-common-2.25.1.jar:na]
at org.glassfish.jersey.internal.Errors.process(Errors.java:297) [jersey-common-2.25.1.jar:na]
at org.glassfish.jersey.internal.Errors.process(Errors.java:267) [jersey-common-2.25.1.jar:na]
at org.glassfish.jersey.process.internal.RequestScope.runInScope(RequestScope.java:317) [jersey-common-2.25.1.jar:na]
at org.glassfish.jersey.server.ServerRuntime.process(ServerRuntime.java:305) [jersey-server-2.25.1.jar:na]
at org.glassfish.jersey.server.ApplicationHandler.handle(ApplicationHandler.java:1154) [jersey-server-2.25.1.jar:na]
at org.glassfish.jersey.servlet.WebComponent.serviceImpl(WebComponent.java:473) [jersey-container-servlet-core-2.25.1.jar:na]
at org.glassfish.jersey.servlet.WebComponent.service(WebComponent.java:427) [jersey-container-servlet-core-2.25.1.jar:na]
at org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:388) [jersey-container-servlet-core-2.25.1.jar:na]
at org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:341) [jersey-container-servlet-core-2.25.1.jar:na]
at org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:228) [jersey-container-servlet-core-2.25.1.jar:na]
at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:812) [jetty-servlet-9.2.22.v20170606.jar:9.2.22.v20170606]
at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1669) [jetty-servlet-9.2.22.v20170606.jar:9.2.22.v20170606]
at org.eclipse.jetty.servlets.UserAgentFilter.doFilter(UserAgentFilter.java:83) [jetty-servlets-9.2.22.v20170606.jar:9.2.22.v20170606]
at org.eclipse.jetty.servlets.GzipFilter.doFilter(GzipFilter.java:301) [jetty-servlets-9.2.22.v20170606.jar:9.2.22.v20170606]
at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1652) [jetty-servlet-9.2.22.v20170606.jar:9.2.22.v20170606]
at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:585) [jetty-servlet-9.2.22.v20170606.jar:9.2.22.v20170606]
at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1127) [jetty-server-9.2.22.v20170606.jar:9.2.22.v20170606]
at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:515) [jetty-servlet-9.2.22.v20170606.jar:9.2.22.v20170606]
at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1061) [jetty-server-9.2.22.v20170606.jar:9.2.22.v20170606]
at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:141) [jetty-server-9.2.22.v20170606.jar:9.2.22.v20170606]
at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:97) [jetty-server-9.2.22.v20170606.jar:9.2.22.v20170606]
at org.eclipse.jetty.server.handler.RequestLogHandler.handle(RequestLogHandler.java:95) [jetty-server-9.2.22.v20170606.jar:9.2.22.v20170606]
at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:97) [jetty-server-9.2.22.v20170606.jar:9.2.22.v20170606]
at org.eclipse.jetty.server.Server.handle(Server.java:499) [jetty-server-9.2.22.v20170606.jar:9.2.22.v20170606]
at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:311) [jetty-server-9.2.22.v20170606.jar:9.2.22.v20170606]
at org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:258) [jetty-server-9.2.22.v20170606.jar:9.2.22.v20170606]
at org.eclipse.jetty.io.AbstractConnection$2.run(AbstractConnection.java:544) [jetty-io-9.2.22.v20170606.jar:9.2.22.v20170606]
at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:635) [jetty-util-9.2.22.v20170606.jar:9.2.22.v20170606]
at org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:555) [jetty-util-9.2.22.v20170606.jar:9.2.22.v20170606]
at java.lang.Thread.run(Thread.java:748) [na:1.8.0_131]
2018-06-18 17:29:19,125 [qtp1598329273-198] INFO c.d.exec.catalog.CatalogServiceImpl - User Error Occurred [ErrorId: c2afc20e-19b0-4bc9-b3dd-83aec88883e1]
com.dremio.common.exceptions.UserException: Failure while configuring source [Shadow Master]
at com.dremio.common.exceptions.UserException$Builder.build(UserException.java:746) ~[dremio-common-2.0.5-201806021755080191-767cfb5.jar:2.0.5-201806021755080191-767cfb5]
at com.dremio.exec.catalog.CatalogServiceImpl.createOrUpdateSource(CatalogServiceImpl.java:629) [dremio-sabot-kernel-2.0.5-201806021755080191-767cfb5.jar:2.0.5-201806021755080191-767cfb5]
at com.dremio.exec.catalog.CatalogServiceImpl.createSource(CatalogServiceImpl.java:376) [dremio-sabot-kernel-2.0.5-201806021755080191-767cfb5.jar:2.0.5-201806021755080191-767cfb5]
at com.dremio.exec.catalog.CatalogServiceImpl.access$600(CatalogServiceImpl.java:100) [dremio-sabot-kernel-2.0.5-201806021755080191-767cfb5.jar:2.0.5-201806021755080191-767cfb5]
at com.dremio.exec.catalog.CatalogServiceImpl$SourceModifier.createSource(CatalogServiceImpl.java:946) [dremio-sabot-kernel-2.0.5-201806021755080191-767cfb5.jar:2.0.5-201806021755080191-767cfb5]
at com.dremio.exec.catalog.CatalogImpl.createSource(CatalogImpl.java:529) [dremio-sabot-kernel-2.0.5-201806021755080191-767cfb5.jar:2.0.5-201806021755080191-767cfb5]
at com.dremio.exec.catalog.DelegatingCatalog.createSource(DelegatingCatalog.java:182) [dremio-sabot-kernel-2.0.5-201806021755080191-767cfb5.jar:2.0.5-201806021755080191-767cfb5]
at com.dremio.dac.service.source.SourceService.registerSourceWithRuntime(SourceService.java:147) [dremio-dac-backend-2.0.5-201806021755080191-767cfb5.jar:2.0.5-201806021755080191-767cfb5]
at com.dremio.dac.service.source.SourceService.registerSourceWithRuntime(SourceService.java:138) [dremio-dac-backend-2.0.5-201806021755080191-767cfb5.jar:2.0.5-201806021755080191-767cfb5]
at com.dremio.dac.service.source.SourceService.registerSourceWithRuntime(SourceService.java:134) [dremio-dac-backend-2.0.5-201806021755080191-767cfb5.jar:2.0.5-201806021755080191-767cfb5]
at com.dremio.dac.resource.PutSourceResource.putSource(PutSourceResource.java:80) [dremio-dac-backend-2.0.5-201806021755080191-767cfb5.jar:2.0.5-201806021755080191-767cfb5]
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_131]
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:1.8.0_131]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_131]
at java.lang.reflect.Method.invoke(Method.java:498) ~[na:1.8.0_131]
at org.glassfish.jersey.server.model.internal.ResourceMethodInvocationHandlerFactory$1.invoke(ResourceMethodInvocationHandlerFactory.java:81) [jersey-server-2.25.1.jar:na]
at org.glassfish.jersey.server.model.internal.AbstractJavaResourceMethodDispatcher$1.run(AbstractJavaResourceMethodDispatcher.java:144) [jersey-server-2.25.1.jar:na]
at org.glassfish.jersey.server.model.internal.AbstractJavaResourceMethodDispatcher.invoke(AbstractJavaResourceMethodDispatcher.java:161) [jersey-server-2.25.1.jar:na]
at org.glassfish.jersey.server.model.internal.JavaResourceMethodDispatcherProvider$TypeOutInvoker.doDispatch(JavaResourceMethodDispatcherProvider.java:205) [jersey-server-2.25.1.jar:na]
at org.glassfish.jersey.server.model.internal.AbstractJavaResourceMethodDispatcher.dispatch(AbstractJavaResourceMethodDispatcher.java:99) [jersey-server-2.25.1.jar:na]
at org.glassfish.jersey.server.model.ResourceMethodInvoker.invoke(ResourceMethodInvoker.java:389) [jersey-server-2.25.1.jar:na]
at org.glassfish.jersey.server.model.ResourceMethodInvoker.apply(ResourceMethodInvoker.java:347) [jersey-server-2.25.1.jar:na]
at org.glassfish.jersey.server.model.ResourceMethodInvoker.apply(ResourceMethodInvoker.java:102) [jersey-server-2.25.1.jar:na]
at org.glassfish.jersey.server.ServerRuntime$2.run(ServerRuntime.java:326) [jersey-server-2.25.1.jar:na]
at org.glassfish.jersey.internal.Errors$1.call(Errors.java:271) [jersey-common-2.25.1.jar:na]
at org.glassfish.jersey.internal.Errors$1.call(Errors.java:267) [jersey-common-2.25.1.jar:na]
at org.glassfish.jersey.internal.Errors.process(Errors.java:315) [jersey-common-2.25.1.jar:na]
at org.glassfish.jersey.internal.Errors.process(Errors.java:297) [jersey-common-2.25.1.jar:na]
at org.glassfish.jersey.internal.Errors.process(Errors.java:267) [jersey-common-2.25.1.jar:na]
at org.glassfish.jersey.process.internal.RequestScope.runInScope(RequestScope.java:317) [jersey-common-2.25.1.jar:na]
at org.glassfish.jersey.server.ServerRuntime.process(ServerRuntime.java:305) [jersey-server-2.25.1.jar:na]
at org.glassfish.jersey.server.ApplicationHandler.handle(ApplicationHandler.java:1154) [jersey-server-2.25.1.jar:na]
at org.glassfish.jersey.servlet.WebComponent.serviceImpl(WebComponent.java:473) [jersey-container-servlet-core-2.25.1.jar:na]
at org.glassfish.jersey.servlet.WebComponent.service(WebComponent.java:427) [jersey-container-servlet-core-2.25.1.jar:na]
at org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:388) [jersey-container-servlet-core-2.25.1.jar:na]
at org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:341) [jersey-container-servlet-core-2.25.1.jar:na]
at org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:228) [jersey-container-servlet-core-2.25.1.jar:na]
at org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:812) [jetty-servlet-9.2.22.v20170606.jar:9.2.22.v20170606]
at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1669) [jetty-servlet-9.2.22.v20170606.jar:9.2.22.v20170606]
at org.eclipse.jetty.servlets.UserAgentFilter.doFilter(UserAgentFilter.java:83) [jetty-servlets-9.2.22.v20170606.jar:9.2.22.v20170606]
at org.eclipse.jetty.servlets.GzipFilter.doFilter(GzipFilter.java:301) [jetty-servlets-9.2.22.v20170606.jar:9.2.22.v20170606]
at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1652) [jetty-servlet-9.2.22.v20170606.jar:9.2.22.v20170606]
at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:585) [jetty-servlet-9.2.22.v20170606.jar:9.2.22.v20170606]
at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1127) [jetty-server-9.2.22.v20170606.jar:9.2.22.v20170606]
at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:515) [jetty-servlet-9.2.22.v20170606.jar:9.2.22.v20170606]
at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1061) [jetty-server-9.2.22.v20170606.jar:9.2.22.v20170606]
at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:141) [jetty-server-9.2.22.v20170606.jar:9.2.22.v20170606]
at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:97) [jetty-server-9.2.22.v20170606.jar:9.2.22.v20170606]
at org.eclipse.jetty.server.handler.RequestLogHandler.handle(RequestLogHandler.java:95) [jetty-server-9.2.22.v20170606.jar:9.2.22.v20170606]
at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:97) [jetty-server-9.2.22.v20170606.jar:9.2.22.v20170606]
at org.eclipse.jetty.server.Server.handle(Server.java:499) [jetty-server-9.2.22.v20170606.jar:9.2.22.v20170606]
at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:311) [jetty-server-9.2.22.v20170606.jar:9.2.22.v20170606]
at org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:258) [jetty-server-9.2.22.v20170606.jar:9.2.22.v20170606]
at org.eclipse.jetty.io.AbstractConnection$2.run(AbstractConnection.java:544) [jetty-io-9.2.22.v20170606.jar:9.2.22.v20170606]
at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:635) [jetty-util-9.2.22.v20170606.jar:9.2.22.v20170606]
at org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:555) [jetty-util-9.2.22.v20170606.jar:9.2.22.v20170606]
at java.lang.Thread.run(Thread.java:748) [na:1.8.0_131]
Caused by: java.util.concurrent.ExecutionException: java.lang.RuntimeException: Unable to get host lists from any host seed.
at com.google.common.util.concurrent.AbstractFuture$Sync.getValue(AbstractFuture.java:299) ~[guava-18.0.jar:na]
at com.google.common.util.concurrent.AbstractFuture$Sync.get(AbstractFuture.java:272) ~[guava-18.0.jar:na]
at com.google.common.util.concurrent.AbstractFuture.get(AbstractFuture.java:96) ~[guava-18.0.jar:na]
at com.google.common.util.concurrent.ForwardingFuture.get(ForwardingFuture.java:69) ~[guava-18.0.jar:na]
at com.google.common.util.concurrent.AbstractCheckedFuture.checkedGet(AbstractCheckedFuture.java:107) ~[guava-18.0.jar:na]
at com.dremio.exec.catalog.CatalogServiceImpl.createOrUpdateSource(CatalogServiceImpl.java:617) [dremio-sabot-kernel-2.0.5-201806021755080191-767cfb5.jar:2.0.5-201806021755080191-767cfb5]
… 55 common frames omitted
Caused by: java.lang.RuntimeException: Unable to get host lists from any host seed.
at com.dremio.plugins.elastic.ElasticConnectionPool.updateClients(ElasticConnectionPool.java:226) ~[dremio-elasticsearch-plugin-2.0.5-201806021755080191-767cfb5.jar:2.0.5-201806021755080191-767cfb5]
at com.dremio.plugins.elastic.ElasticConnectionPool.connect(ElasticConnectionPool.java:177) ~[dremio-elasticsearch-plugin-2.0.5-201806021755080191-767cfb5.jar:2.0.5-201806021755080191-767cfb5]
at com.dremio.plugins.elastic.ElasticsearchStoragePlugin.start(ElasticsearchStoragePlugin.java:420) ~[dremio-elasticsearch-plugin-2.0.5-201806021755080191-767cfb5.jar:2.0.5-201806021755080191-767cfb5]
at com.dremio.exec.catalog.ManagedStoragePlugin$2.run(ManagedStoragePlugin.java:238) ~[dremio-sabot-kernel-2.0.5-201806021755080191-767cfb5.jar:2.0.5-201806021755080191-767cfb5]
at com.dremio.concurrent.RenamingRunnable.run(RenamingRunnable.java:36) ~[dremio-common-2.0.5-201806021755080191-767cfb5.jar:2.0.5-201806021755080191-767cfb5]
at com.dremio.concurrent.SingletonRunnable.run(SingletonRunnable.java:41) ~[dremio-common-2.0.5-201806021755080191-767cfb5.jar:2.0.5-201806021755080191-767cfb5]
at com.dremio.concurrent.SafeRunnable.run(SafeRunnable.java:40) ~[dremio-common-2.0.5-201806021755080191-767cfb5.jar:2.0.5-201806021755080191-767cfb5]
at com.dremio.concurrent.Runnables$1.run(Runnables.java:45) ~[dremio-common-2.0.5-201806021755080191-767cfb5.jar:2.0.5-201806021755080191-767cfb5]
Caused by: java.lang.RuntimeException: Failure getting server list from seed host
at com.dremio.plugins.elastic.ElasticConnectionPool.updateClients(ElasticConnectionPool.java:222) ~[dremio-elasticsearch-plugin-2.0.5-201806021755080191-767cfb5.jar:2.0.5-201806021755080191-767cfb5]
… 7 common frames omitted
Caused by: java.lang.NullPointerException: null
at com.dremio.plugins.elastic.ElasticConnectionPool.getHostList(ElasticConnectionPool.java:355) ~[dremio-elasticsearch-plugin-2.0.5-201806021755080191-767cfb5.jar:2.0.5-201806021755080191-767cfb5]
at com.dremio.plugins.elastic.ElasticConnectionPool.updateClients(ElasticConnectionPool.java:187) ~[dremio-elasticsearch-plugin-2.0.5-201806021755080191-767cfb5.jar:2.0.5-201806021755080191-767cfb5]
… 7 common frames omitted

Are you connecting to a managed Elasticsearch service?
Try setting the “Query whitelisted hosts only” option under Advanced Options in Dremio for the problematic Elasticsearch source.

Hi @macharya

Couple of things,

Can you please share the ES data source settings? Maybe a screen shot. I am also interested in the advanced options.

Also from the Dremio coordinator node can you please try the below command?

curl -X GET "<ES-host-name>:<port>/_cat/indices?v"

Thanks,
@balaji.ramaswamy