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From "Claus Ibsen (Commented) (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CAMEL-5058) Bug: Unique Endpoints Leaking in DefaultInflightRepository
Date Tue, 06 Mar 2012 10:24:57 GMT

    [ https://issues.apache.org/jira/browse/CAMEL-5058?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13223140#comment-13223140
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Claus Ibsen commented on CAMEL-5058:
------------------------------------

Notice ideally the inflight registry would just track for routes only. But the producer template
uses an UoW as well for some reason we had to do a while ago. So it will also enlist itself
in the inflight registry (well its in fact also an inflight message you may say).

So we can either ensure to remove from the inflight map if it become zero as you suggest.
This may require a bit of locking, as you need to remove and compare.

Alternative, as the map, does not need to be removed in real time, we can have a background
thread, doing the cleanup in a scheduled fashion.
                
> Bug: Unique Endpoints Leaking in DefaultInflightRepository
> ----------------------------------------------------------
>
>                 Key: CAMEL-5058
>                 URL: https://issues.apache.org/jira/browse/CAMEL-5058
>             Project: Camel
>          Issue Type: Bug
>          Components: camel-core
>    Affects Versions: 2.9.0
>            Reporter: Zach Calvert
>            Assignee: Claus Ibsen
>             Fix For: 2.10.0, 2.9.2
>
>   Original Estimate: 24h
>  Remaining Estimate: 24h
>
> If you have an endpoint protocol which uses unique URIs you will leak Strings in the
HashMap stored in the DefaultInflightRepository (org.apache.camel.impl.DefaultInflightRepository)
> It seems there is a reference counting scheme in place, but it doesn't do a remove until
the "stop" method is called to shut the system down.  We are running XMPP endpoints, which
use a protocol like xmpp://someaccount@domain/password?to=someOtherAccount
> When there are 10 million accounts, not all of which are active, but all of which may
message at some time or another, no references are removed to the endpointCount.
> When the count becomes 0, the reference should be removed and the size method will still
return the appropriate result.
> Please be careful in the implementation to synchronize on some object (perhaps the AtomicInteger)
reflecting a read/write lock on the endpoint count modification.

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