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https://issues.apache.org/jira/browse/AMQ-3640?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13458586#comment-13458586
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Claus Ibsen commented on AMQ-3640:
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Have you tried raising the start-level of activemq-broker.xml to be after the
core+blueprint.
Also this is not a AMQ problem per see, but an SMX / OSGi issue as they
repackage AMQ in their product.
> activemq-broker.xml stays in Blueprint "GracePeriod" state forever
> ------------------------------------------------------------------
>
> Key: AMQ-3640
> URL: https://issues.apache.org/jira/browse/AMQ-3640
> Project: ActiveMQ
> Issue Type: Bug
> Components: activemq-camel
> Affects Versions: 5.4.2
> Environment: ServiceMix 4.3
> Reporter: metatech
>
> In a small proportion of the time (about 20%) of first starting ServiceMix,
> the bundle "activemq-broker.xml" stays in the "GracePeriod" forever (ie no
> timeout after 5 minutes). It is waiting for a namespace handler for the
> namespace "http://activemq.apache.org/schema/core";, which should be exported
> by the bundle "activemq-blueprint", which is declared as a OSGi fragment of
> the "activemq-core" bundle. When the problem occurs, the fragment is not
> properly attached to the host bundle. See the extract of the Karaf console :
> {code}
> [ 46] [Active ] [ ] [ ] [ 60] activemq-core (5.4.2)
> [ 56] [Installed ] [ ] [ ] [ 60] activemq-blueprint
> (5.4.2)
> [ 59] [Active ] [GracePeriod ] [ ] [ 60] activemq-broker.xml
> (0.0.0)
> {code}
> There are no "Hosts:" and "Fragments:" lines.
> The activemq-blueprint stays in "Installed" state instead of "Resolved", and
> cannot be started manually because it is a fragment bundle.
> Proposed short-term workaround (untested) : merge both bundles
> "activemq-core" and "activemq-blueprint".
> Long-term solution : I guess the problem is due to a race condition between
> the starting of the bundles and the discovery of the "host-fragment"
> relationship : maybe a 2-phase mechanism is needed.
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