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https://issues.apache.org/jira/browse/NIFI-4898?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16372517#comment-16372517
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Josef Zahner commented on NIFI-4898:
------------------------------------
You were right, I was using a lot of custom NARs/JARs. So I've removed them and
finally it turns out that the Splunk JAR (splunk-library-javalogging-1.5.2)
caused the issue. I'll investigate now why this happens. I was confused because
with NiFi 1.4.0 it worked without any issues or at least without error messages
in the log. To be honest I haven't checked whether Splunk gets the log
messages. I'll try to investigate now where the error comes from. Thanks a lot!
> Remote Process Group in a SSL setup generates Java Exception
> ------------------------------------------------------------
>
> Key: NIFI-4898
> URL: https://issues.apache.org/jira/browse/NIFI-4898
> Project: Apache NiFi
> Issue Type: Bug
> Affects Versions: 1.5.0
> Environment: NiFi Version 1.5.0
> Java 1.8.0_161-b12
> CentOS Linux release 7.4.1708
> Reporter: Josef Zahner
> Priority: Major
>
> In a SSL secured NiFi setup, doesn't matter whether it is a cluster or not,
> NiFi creates a Java exception as soon as I create a "Remote Process Group".
> It doesn't mater which URL (even one which doesn't exists) I insert or if I
> choose RAW or HTTP, the error is always the same and occurs as soon as I
> click "add" on the "Remote Process Group".
> On NiFi 1.4.0 this works without any issues.
> Error:
> {code:java}
> 2018-02-21 10:42:10,006 ERROR [Remote Process Group
> b7bde0cc-0161-1000-2e7f-3167a78d8386 Thread-1]
> org.apache.nifi.engine.FlowEngine A flow controller task execution stopped
> abnormally
> java.util.concurrent.ExecutionException: java.lang.NoSuchMethodError:
> org.apache.http.impl.client.HttpClientBuilder.setSSLContext(Ljavax/net/ssl/SSLContext;)Lorg/apache/http/impl/client/HttpClientBuilder;
> at java.util.concurrent.FutureTask.report(Unknown Source)
> at java.util.concurrent.FutureTask.get(Unknown Source)
> at org.apache.nifi.engine.FlowEngine.afterExecute(FlowEngine.java:100)
> at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
> at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
> at java.lang.Thread.run(Unknown Source)
> Caused by: java.lang.NoSuchMethodError:
> org.apache.http.impl.client.HttpClientBuilder.setSSLContext(Ljavax/net/ssl/SSLContext;)Lorg/apache/http/impl/client/HttpClientBuilder;
> at
> org.apache.nifi.remote.util.SiteToSiteRestApiClient.setupClient(SiteToSiteRestApiClient.java:278)
> at
> org.apache.nifi.remote.util.SiteToSiteRestApiClient.getHttpClient(SiteToSiteRestApiClient.java:219)
> at
> org.apache.nifi.remote.util.SiteToSiteRestApiClient.execute(SiteToSiteRestApiClient.java:1189)
> at
> org.apache.nifi.remote.util.SiteToSiteRestApiClient.execute(SiteToSiteRestApiClient.java:1237)
> at
> org.apache.nifi.remote.util.SiteToSiteRestApiClient.fetchController(SiteToSiteRestApiClient.java:419)
> at
> org.apache.nifi.remote.util.SiteToSiteRestApiClient.getController(SiteToSiteRestApiClient.java:394)
> at
> org.apache.nifi.remote.util.SiteToSiteRestApiClient.getController(SiteToSiteRestApiClient.java:361)
> at
> org.apache.nifi.remote.util.SiteToSiteRestApiClient.getController(SiteToSiteRestApiClient.java:346)
> at
> org.apache.nifi.remote.StandardRemoteProcessGroup.refreshFlowContents(StandardRemoteProcessGroup.java:842)
> at
> org.apache.nifi.remote.StandardRemoteProcessGroup.lambda$initialize$0(StandardRemoteProcessGroup.java:193)
> at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source)
> at java.util.concurrent.FutureTask.run(Unknown Source)
> at
> java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$201(Unknown
> Source)
> at
> java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(Unknown
> Source)
> ... 3 common frames omitted
> 2018-02-21 10:42:10,009 ERROR [Remote Process Group
> b7bde0cc-0161-1000-2e7f-3167a78d8386 Thread-1]
> org.apache.nifi.engine.FlowEngine A flow controller task execution stopped
> abnormally
> java.util.concurrent.ExecutionException: java.lang.NoSuchMethodError:
> org.apache.http.impl.client.HttpClientBuilder.setSSLContext(Ljavax/net/ssl/SSLContext;)Lorg/apache/http/impl/client/HttpClientBuilder;
> at java.util.concurrent.FutureTask.report(Unknown Source)
> at java.util.concurrent.FutureTask.get(Unknown Source)
> at org.apache.nifi.engine.FlowEngine.afterExecute(FlowEngine.java:100)
> at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
> at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
> at java.lang.Thread.run(Unknown Source)
> Caused by: java.lang.NoSuchMethodError:
> org.apache.http.impl.client.HttpClientBuilder.setSSLContext(Ljavax/net/ssl/SSLContext;)Lorg/apache/http/impl/client/HttpClientBuilder;
> at
> org.apache.nifi.remote.util.SiteToSiteRestApiClient.setupClient(SiteToSiteRestApiClient.java:278)
> at
> org.apache.nifi.remote.util.SiteToSiteRestApiClient.getHttpClient(SiteToSiteRestApiClient.java:219)
> at
> org.apache.nifi.remote.util.SiteToSiteRestApiClient.execute(SiteToSiteRestApiClient.java:1189)
> at
> org.apache.nifi.remote.util.SiteToSiteRestApiClient.execute(SiteToSiteRestApiClient.java:1237)
> at
> org.apache.nifi.remote.util.SiteToSiteRestApiClient.fetchController(SiteToSiteRestApiClient.java:419)
> at
> org.apache.nifi.remote.util.SiteToSiteRestApiClient.getController(SiteToSiteRestApiClient.java:394)
> at
> org.apache.nifi.remote.util.SiteToSiteRestApiClient.getController(SiteToSiteRestApiClient.java:361)
> at
> org.apache.nifi.remote.util.SiteToSiteRestApiClient.getController(SiteToSiteRestApiClient.java:346)
> at
> org.apache.nifi.remote.StandardRemoteProcessGroup$InitializationTask.run(StandardRemoteProcessGroup.java:1177)
> at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source)
> at java.util.concurrent.FutureTask.runAndReset(Unknown Source)
> at
> java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(Unknown
> Source)
> at
> java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(Unknown
> Source)
> ... 3 common frames omitted
> 2018-02-21 10:42:10,308 INFO [Flow Service Tasks Thread-1]
> o.a.nifi.controller.StandardFlowService Saved flow controller
> org.apache.nifi.controller.FlowController@d978a3e // Another save pending =
> false
> {code}
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