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https://issues.apache.org/activemq/browse/CAMEL-2854?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=60287#action_60287
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Michael Chen commented on CAMEL-2854:
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No, we never explicitly start or stop any endpoint. We only rely on the
route-builder to setup the routes during startup.
We do have some cases where the endpoint is "obtained" during run-time and
added to the route-slip. Still we never start or stop any endpoint.
My colleague discovered that in one instance, we hold on to the reference of an
endpoint and got the same warning. It turns out Camel context has a little
LRUCache that discards older endpoint instances. We fixed that one place, but
it still does not explain all other instances of this problem.
> No consumers available on "direct://xyz" endpoint
> -------------------------------------------------
>
> Key: CAMEL-2854
> URL: https://issues.apache.org/activemq/browse/CAMEL-2854
> Project: Apache Camel
> Issue Type: Bug
> Components: camel-core
> Affects Versions: 2.2.0
> Environment: ActiveMQ 5.3.2 / Camel 2.2.0
> Reporter: Michael Chen
> Priority: Blocker
>
> The following warning in log4j log shows up with no predictable reason:
> 2010-06-24 14:07:01,090 WARN
> [DefaultMessageListenerContainer-7:DirectProducer.java:42] No consumers
> available on endpoint: Endpoint[direct://UserCancelJobRequest] to process:
> Exchange[JmsMessage:
> RunnerBase{locationToRunId='DV02YcABTE43HTRPATEGCBFk0m0', jobrun_id=1234,
> requestOrigId='null', secretKey='null', replyToQueueOrTopic='null',
> corrolationId='null', requestCreationTime=Thu Jun 24 14:07:01 PDT 2010}]
> The endpoint [direct://UserCancelJobRequest] could be a number of different
> endpoints in our application and all of them are of "direct:" type. When
> this happens, all messages that run through that endpoint will fail, and it
> will never recover unless the application is restarted.
> Also, if I restart the application and use that route immediately, that
> warning will not occur and the request will finish successfully. It seems to
> happen to routes that have not been used for a while after startup.
> When this happens, I can find the exact Camel endpoint/route/processor in
> JConsole, and nothing seems to be wrong. How can a "direct:" endpoint runs
> out of consumer? Isn't the thread that product this warning THE thread to
> process the message?
> We recently upgraded from 5.2 to 5.3.2 and this starts to show up randomly.
> It is a show stopper!
> --Michael
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