Github user trixpan commented on the issue:
https://github.com/apache/nifi/pull/827
Stopping the processor with an agent connected also seems to throw an
exception (not sure if expected)
```
2016-08-12 01:42:06,593 INFO [StandardProcessScheduler Thread-7]
org.subethamail.smtp.server.SMTPServer SMTP server *:2525 stopping
2016-08-12 01:42:06,594 INFO [org.subethamail.smtp.server.ServerThread
*:2525] org.subethamail.smtp.server.ServerThread SMTP server *:2525 stopped
2016-08-12 01:42:06,596 ERROR
[org.subethamail.smtp.server.Session-/127.0.0.1:38072]
org.subethamail.smtp.server.Session Unexpected error in the SMTP handler thread
java.lang.IllegalStateException: NIFI Consumer was stopped before message
was successfully consumed by NiFi
at
org.apache.nifi.processors.email.SmtpConsumer.data(SmtpConsumer.java:125)
~[na:na]
at
org.subethamail.smtp.command.DataCommand.execute(DataCommand.java:64) ~[na:na]
at
org.subethamail.smtp.server.RequireTLSCommandWrapper.execute(RequireTLSCommandWrapper.java:30)
~[na:na]
at
org.subethamail.smtp.server.CommandHandler.handleCommand(CommandHandler.java:99)
~[na:na]
at
org.subethamail.smtp.server.Session.runCommandLoop(Session.java:244) ~[na:na]
at org.subethamail.smtp.server.Session.run(Session.java:145)
~[na:na]
at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
[na:1.8.0_91]
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
[na:1.8.0_91]
at java.lang.Thread.run(Thread.java:745) [na:1.8.0_91]
2016-08-12 01:42:06,597 ERROR [pool-33-thread-1] org.apache.nifi.NiFi An
Unknown Error Occurred in Thread Thread[pool-33-thread-1,5,main]:
java.lang.IllegalStateException: NIFI Consumer was stopped before message was
successfully consumed by NiFi
2016-08-12 01:42:06,599 ERROR [pool-33-thread-1] org.apache.nifi.NiFi
java.lang.IllegalStateException: NIFI Consumer was stopped before message
was successfully consumed by NiFi
at
org.apache.nifi.processors.email.SmtpConsumer.data(SmtpConsumer.java:125)
~[na:na]
at
org.subethamail.smtp.command.DataCommand.execute(DataCommand.java:64) ~[na:na]
at
org.subethamail.smtp.server.RequireTLSCommandWrapper.execute(RequireTLSCommandWrapper.java:30)
~[na:na]
at
org.subethamail.smtp.server.CommandHandler.handleCommand(CommandHandler.java:99)
~[na:na]
at
org.subethamail.smtp.server.Session.runCommandLoop(Session.java:244) ~[na:na]
at org.subethamail.smtp.server.Session.run(Session.java:145)
~[na:na]
at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
~[na:1.8.0_91]
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
~[na:1.8.0_91]
at java.lang.Thread.run(Thread.java:745) ~[na:1.8.0_91]
```
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