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https://issues.apache.org/jira/browse/NIFI-5117?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Pierre Villard resolved NIFI-5117.
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Resolution: Feedback Received
Apache NiFi 1.x is no longer maintained and no new release is planned on the
1.x release line. Marking as resolved as part of a cleanup operation. Please
open a new one with an updated description if this is still relevant for NiFi
2.x.
> AMQP Consumer: Error during creation of Flow File results in lost message
> -------------------------------------------------------------------------
>
> Key: NIFI-5117
> URL: https://issues.apache.org/jira/browse/NIFI-5117
> Project: Apache NiFi
> Issue Type: Bug
> Components: Extensions
> Affects Versions: 1.3.0, 1.4.0, 1.5.0, 1.6.0
> Reporter: Edward Armes
> Priority: Major
>
> The AMQP Consumer performs a "basicGet()". The was this basicGet is called
> results in the message being dequeued from the AMQP queue.
> If a processor instances fails to submit a flow file to the output as a
> result in the case of an error in "session.write()" or the processor is
> unexpectedly halted before the flow file is created and persisted, the
> message consumer from an AMQP queue is lost and can't be recovered.
> Reference:
> [https://rabbitmq.github.io/rabbitmq-java-client/api/current/com/rabbitmq/client/Channel.html#basicGet-java.lang.String-boolean-:]
> A potential fix here would be to:
> # AMQPConsumer.java: Change the call "basicGet(this.queueName, true)" ->
> "basicGet(this.queueName, false)"
> # AMQPConsumer.java: New method that wraps the basicAck() and basicNack()
> methods to taking a long (the delivery tag) and boolean (successes) if
> successes is true basicAck() is called is false basicNack() with requeue is
> called
> # ConsumerAMQP.java: An additional call(s) to "consumer" to call the new
> method as needed in case of successes and error.
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