2017-09-26 16:53:46,116 ERROR [Timer-Driven Process Thread-10] o.a.nifi.processors.hive.SelectHiveQL SelectHiveQL[id=03b64a85-9c12-1ff8-852d-90ad5f4fef3f] Unable to execute HiveQL select query show databases due to org.apache.nifi.processor.exception.ProcessException: java.sql.SQLException: org.apache.thrift.transport.TTransportException: org.apache.http.client.ClientProtocolException; routing to failure: {}
org.apache.nifi.processor.exception.ProcessException: java.sql.SQLException: org.apache.thrift.transport.TTransportException: org.apache.http.client.ClientProtocolException
        at org.apache.nifi.processors.hive.SelectHiveQL$2.process(SelectHiveQL.java:305)
        at org.apache.nifi.controller.repository.StandardProcessSession.write(StandardProcessSession.java:2529)
        at org.apache.nifi.processors.hive.SelectHiveQL.onTrigger(SelectHiveQL.java:275)
        at org.apache.nifi.processors.hive.SelectHiveQL.lambda$onTrigger$0(SelectHiveQL.java:215)
        at org.apache.nifi.processor.util.pattern.PartialFunctions.onTrigger(PartialFunctions.java:114)
        at org.apache.nifi.processor.util.pattern.PartialFunctions.onTrigger(PartialFunctions.java:106)
        at org.apache.nifi.processors.hive.SelectHiveQL.onTrigger(SelectHiveQL.java:215)
        at org.apache.nifi.controller.StandardProcessorNode.onTrigger(StandardProcessorNode.java:1118)
        at org.apache.nifi.controller.tasks.ContinuallyRunProcessorTask.call(ContinuallyRunProcessorTask.java:147)
        at org.apache.nifi.controller.tasks.ContinuallyRunProcessorTask.call(ContinuallyRunProcessorTask.java:47)
        at org.apache.nifi.controller.scheduling.TimerDrivenSchedulingAgent$1.run(TimerDrivenSchedulingAgent.java:132)
        at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
        at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:308)
        at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:180)
        at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:294)
        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: java.sql.SQLException: org.apache.thrift.transport.TTransportException: org.apache.http.client.ClientProtocolException
        at org.apache.hive.jdbc.HiveStatement.runAsyncOnServer(HiveStatement.java:308)
        at org.apache.hive.jdbc.HiveStatement.execute(HiveStatement.java:241)
        at org.apache.hive.jdbc.HiveStatement.executeQuery(HiveStatement.java:437)
        at org.apache.commons.dbcp.DelegatingStatement.executeQuery(DelegatingStatement.java:208)
        at org.apache.commons.dbcp.DelegatingStatement.executeQuery(DelegatingStatement.java:208)
        at org.apache.nifi.processors.hive.SelectHiveQL$2.process(SelectHiveQL.java:293)
        ... 17 common frames omitted
Caused by: org.apache.thrift.transport.TTransportException: org.apache.http.client.ClientProtocolException
        at org.apache.thrift.transport.THttpClient.flushUsingHttpClient(THttpClient.java:297)
        at org.apache.thrift.transport.THttpClient.flush(THttpClient.java:313)
        at org.apache.thrift.TServiceClient.sendBase(TServiceClient.java:73)
        at org.apache.thrift.TServiceClient.sendBase(TServiceClient.java:62)
        at org.apache.hive.service.cli.thrift.TCLIService$Client.send_ExecuteStatement(TCLIService.java:223)
        at org.apache.hive.service.cli.thrift.TCLIService$Client.ExecuteStatement(TCLIService.java:215)
        at sun.reflect.GeneratedMethodAccessor518.invoke(Unknown Source)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.lang.reflect.Method.invoke(Method.java:498)
        at org.apache.hive.jdbc.HiveConnection$SynchronizedHandler.invoke(HiveConnection.java:1374)
        at com.sun.proxy.$Proxy151.ExecuteStatement(Unknown Source)
        at org.apache.hive.jdbc.HiveStatement.runAsyncOnServer(HiveStatement.java:299)
        ... 22 common frames omitted
Caused by: org.apache.http.client.ClientProtocolException: null
        at org.apache.http.impl.client.InternalHttpClient.doExecute(InternalHttpClient.java:187)
        at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:118)
        at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:56)
        at org.apache.thrift.transport.THttpClient.flushUsingHttpClient(THttpClient.java:251)
        ... 33 common frames omitted
Caused by: org.apache.http.HttpException: null
        at org.apache.hive.jdbc.HttpRequestInterceptorBase.process(HttpRequestInterceptorBase.java:86)
        at org.apache.http.protocol.ImmutableHttpProcessor.process(ImmutableHttpProcessor.java:132)
        at org.apache.http.impl.execchain.ProtocolExec.execute(ProtocolExec.java:183)
        at org.apache.http.impl.execchain.RetryExec.execute(RetryExec.java:89)
        at org.apache.http.impl.execchain.ServiceUnavailableRetryExec.execute(ServiceUnavailableRetryExec.java:85)
        at org.apache.http.impl.execchain.RedirectExec.execute(RedirectExec.java:111)
        at org.apache.http.impl.client.InternalHttpClient.doExecute(InternalHttpClient.java:185)
        ... 36 common frames omitted
Caused by: org.apache.http.HttpException: null
        at org.apache.hive.jdbc.HttpKerberosRequestInterceptor.addHttpAuthHeader(HttpKerberosRequestInterceptor.java:68)
        at org.apache.hive.jdbc.HttpRequestInterceptorBase.process(HttpRequestInterceptorBase.java:74)
        ... 42 common frames omitted
Caused by: java.lang.reflect.UndeclaredThrowableException: null
        at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1884)
        at org.apache.hive.service.auth.HttpAuthUtils.getKerberosServiceTicket(HttpAuthUtils.java:83)
        at org.apache.hive.jdbc.HttpKerberosRequestInterceptor.addHttpAuthHeader(HttpKerberosRequestInterceptor.java:62)
        ... 43 common frames omitted
Caused by: org.ietf.jgss.GSSException: No valid credentials provided (Mechanism level: Failed to find any Kerberos tgt)
        at sun.security.jgss.krb5.Krb5InitCredential.getInstance(Krb5InitCredential.java:147)
        at sun.security.jgss.krb5.Krb5MechFactory.getCredentialElement(Krb5MechFactory.java:122)
        at sun.security.jgss.krb5.Krb5MechFactory.getMechanismContext(Krb5MechFactory.java:187)
        at sun.security.jgss.GSSManagerImpl.getMechanismContext(GSSManagerImpl.java:224)
        at sun.security.jgss.GSSContextImpl.initSecContext(GSSContextImpl.java:212)
        at sun.security.jgss.GSSContextImpl.initSecContext(GSSContextImpl.java:179)
        at org.apache.hive.service.auth.HttpAuthUtils$HttpKerberosClientAction.run(HttpAuthUtils.java:183)
        at org.apache.hive.service.auth.HttpAuthUtils$HttpKerberosClientAction.run(HttpAuthUtils.java:151)
        at java.security.AccessController.doPrivileged(Native Method)
        at javax.security.auth.Subject.doAs(Subject.java:422)
        at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1866)	
		... 45 common frames omitted