So why the exception if all is in order?
Kind Regards Timothy Garza Data Integration Developer Collinson Technology Services Skype: timothy.garza.cts collinsongroup.com<http://www.collinsongroup.com/> [Collinson Group]<http://www.collinsongroup.com/> From: iain wright [mailto:[email protected]] Sent: 12 November 2015 22:53 To: [email protected] Subject: Re: Flume Exception - http source "A source which accepts Flume Events by HTTP POST and GET. GET should be used for experimentation only." --https://flume.apache.org/FlumeUserGuide.html#http-source This is a source that accepts data, it will not poll an api. You would need your API to push events to flume, or have some tooling inbetween, that polled the API & posted the result to flume. bind 0.0.0.0 The hostname or IP address to listen on -- Iain Wright This email message is confidential, intended only for the recipient(s) named above and may contain information that is privileged, exempt from disclosure under applicable law. If you are not the intended recipient, do not disclose or disseminate the message to anyone except the intended recipient. If you have received this message in error, or are not the named recipient(s), please immediately notify the sender by return email, and delete all copies of this message. On Thu, Nov 12, 2015 at 2:35 PM, Timothy Garza <[email protected]<mailto:[email protected]>> wrote: Should there be an exception, whilst Flume is listening? Kind Regards Timothy Garza Database and BI Developer Collinson Technology Services Skype: timothy.garza.cts collinsongroup.com<http://www.collinsongroup.com/> [Collinson Group]<http://www.collinsongroup.com/> From: Hari Shreedharan [mailto:[email protected]<mailto:[email protected]>] Sent: 12 November 2015 22:02 To: [email protected]<mailto:[email protected]> Subject: Re: Flume Exception - http source HTTP Source does not pull anything from an address, instead it binds to the address specified in the config. It can listen on that port and then accept data from applications. Thanks, Hari Shreedharan On Nov 12, 2015, at 1:59 PM, Timothy Garza <[email protected]<mailto:[email protected]>> wrote: Hi Flumers I’m new to Flume so please go easy on me, but this is a placeholder for those that follow. I’m seeing the following Exception when configuring a http source for Flume v1.6.0, pointing at an externally hosted web API I know I can connect to, and GET/POST to otherwise 15/11/12 21:23:34 ERROR lifecycle.LifecycleSupervisor: Unable to start EventDrivenSourceRunner: { source:org.apache.flume.source.http.HTTPSource{name:<source-name>,state:IDLE} } - Exception follows. java.lang.IllegalStateException: Running HTTP Server found in source: <source-name> before I started one.Will not attempt to start. “<--Exception text!!!” at com.google.common.base.Preconditions.checkState(Preconditions.java:145) at org.apache.flume.source.http.HTTPSource.start(HTTPSource.java:176) at org.apache.flume.source.EventDrivenSourceRunner.start(EventDrivenSourceRunner.java:44) at org.apache.flume.lifecycle.LifecycleSupervisor$MonitorRunnable.run(LifecycleSupervisor.java:251) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471) at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:304) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.access$301(ScheduledThreadPoolExecutor.java:178) at java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:293) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) at java.lang.Thread.run(Thread.java:745) Here are my config lines for the Flume source: flume-ng agent -Dflume.root.logger=WARN,console --conf-file <Flume-Agent>.sources.<source-name>.type = http <Flume-Agent>.sources.<source-name>.port = 443 <Flume-Agent>.sources.<source-name>.bind = https://<url<https://%3curl/> to a perfectly healthy web API> <-- serving JSON data <Flume-Agent>.sources.<source-name>.handler = org.apache.flume.source.http.JSONHandler <Flume-Agent>.sources.<source-name>.selector.type = replicating <-- multiple sinks Now I’ve seen others have had to recompile the Flume Jar to resolve this but is that really what’s going on here? https://community.cloudera.com/t5/Data-Ingestion-Integration/Flume-TwitterSource-language-filter/td-p/23519 https://github.com/cloudera/cdh-twitter-example/issues/10 Apart from the Exceptions, what other logging will help diagnose this? 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