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https://issues.apache.org/jira/browse/BROOKLYN-357?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Svetoslav Neykov updated BROOKLYN-357:
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Description:
Entities created out of {{$brooklyn:entitySpec}} share their config and DSL
objects in particular, blocking each other when resolving them. One entity not
able to resolve or taking longer than usual will block the rest entities in the
group failing our quorum strategies.
The locking happens in
[{{BrooklynDslDeferredSupplier}}|https://github.com/apache/brooklyn-server/blob/d03f254ba19472e3fb5e0a7260cb07679991684a/camp/camp-brooklyn/src/main/java/org/apache/brooklyn/camp/brooklyn/spi/dsl/BrooklynDslDeferredSupplier.java#L111].
The objects don't (or shouldn't) store any state as they are shared between
entities so we can remove the locking altogether. An alternative is to clone
the objects per entity but it won't fully solve the problem as the DSL object
can still be shared between entities through the config inheritance hierarchy.
was:
Entities created out of {{$brooklyn:entitySpec}} share their config and DSL
objects in particular, blocking each other when resolving them. One entity not
able to resolve or taking longer than usual will block the rest entities in the
group failing our quorum strategies.
The locking happens in
[{{BrooklynDslDeferredSupplier}}|https://github.com/apache/brooklyn-server/blob/d03f254ba19472e3fb5e0a7260cb07679991684a/camp/camp-brooklyn/src/main/java/org/apache/brooklyn/camp/brooklyn/spi/dsl/BrooklynDslDeferredSupplier.java#L111].
The objects shouldn't store any state as they are shared between entities so
we can remove the locking altogether. An alternative is to clone the objects
but it won't fully solve the problem as the DSL object can still be shared
between entities through the config inheritance hierarchy.
> $brooklyn:entitySpec entities blocking each other when resolving DSL
> --------------------------------------------------------------------
>
> Key: BROOKLYN-357
> URL: https://issues.apache.org/jira/browse/BROOKLYN-357
> Project: Brooklyn
> Issue Type: Bug
> Reporter: Svetoslav Neykov
>
> Entities created out of {{$brooklyn:entitySpec}} share their config and DSL
> objects in particular, blocking each other when resolving them. One entity
> not able to resolve or taking longer than usual will block the rest entities
> in the group failing our quorum strategies.
> The locking happens in
> [{{BrooklynDslDeferredSupplier}}|https://github.com/apache/brooklyn-server/blob/d03f254ba19472e3fb5e0a7260cb07679991684a/camp/camp-brooklyn/src/main/java/org/apache/brooklyn/camp/brooklyn/spi/dsl/BrooklynDslDeferredSupplier.java#L111].
> The objects don't (or shouldn't) store any state as they are shared between
> entities so we can remove the locking altogether. An alternative is to clone
> the objects per entity but it won't fully solve the problem as the DSL object
> can still be shared between entities through the config inheritance hierarchy.
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