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https://issues.apache.org/jira/browse/NIFI-1523?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15188207#comment-15188207
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Joseph Witt commented on NIFI-1523:
-----------------------------------
removed version for now. we can assign versions as traction is made.
> Improve exception message when trying to connect to output port that is not
> started.
> ------------------------------------------------------------------------------------
>
> Key: NIFI-1523
> URL: https://issues.apache.org/jira/browse/NIFI-1523
> Project: Apache NiFi
> Issue Type: Improvement
> Reporter: Oleg Zhurakousky
> Priority: Trivial
>
> Basically what I have now is a simple flow where GenerateFlowFile sends to
> output Port named _toSpark_. When trying to connect to port which is not
> started I see the following exception message:
> {code}
> org.apache.nifi.remote.exception.PortNotRunningException:
> Peer[url=nifi://localhost:8888,CLOSED] indicates that port
> 35c61f87-6a57-4aab-ac77-34006fc7ab68 is not running
> at
> org.apache.nifi.remote.client.socket.EndpointConnectionPool.getEndpointConnection(EndpointConnectionPool.java:351)
> at
> org.apache.nifi.remote.client.socket.SocketClient.createTransaction(SocketClient.java:129)
> at
> org.apache.nifi.spark.NiFiReceiver$ReceiveRunnable.run(NiFiReceiver.java:149)
> at java.lang.Thread.run(Thread.java:745)
> {code}
> Since port's generated id (35c61f87-6a57-4aab-ac77-34006fc7ab68) is not
> immediately visible from the UI it could be more difficult then it need to be
> to track it in a multi port system.
> So adding port name to the message would help
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