[infinispan-issues] [JBoss JIRA] Commented: (ISPN-1348) Cluster ID generator initialization might not work when default cache is not clustered

[Galder Zamarreño (JIRA)]

    [ https://issues.jboss.org/browse/ISPN-1348?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12625984#comment-12625984 ] 

Galder Zamarreño commented on ISPN-1348:
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Converting ClusterIdGenerator into a global component has the opposite side effect which is, how do HR/Memcached servers get hold of it now when there's no access to global component registry? This is slightly easier because we can get hold of the global component registry via LifecycleCallbacks implementation and cache the ClusterIdGenerator there.

Btw, converting ClusterIdGenerator has a slight impact which is that it's only in use if tx recovery is enabled, or HR/Memcached servers are in use. At CacheManager startup time, you know if tx recovery is on or not, but you don't know if HR/Memcached servers will be in use. So, my current solution always creates a ClusterIdGenerator which is not good.

It needs some further baking...

> Cluster ID generator initialization might not work when default cache is not clustered
> --------------------------------------------------------------------------------------
>
>                 Key: ISPN-1348
>                 URL: https://issues.jboss.org/browse/ISPN-1348
>             Project: Infinispan
>          Issue Type: Bug
>          Components: Cache Server
>            Reporter: Galder Zamarreño
>            Assignee: Galder Zamarreño
>             Fix For: 5.1.0.ALPHA1
>
>
> This is related to the changes introduced as part of ISPN-1233. In Hot Rod servers, cluster ID generator initialization can fail to assign an initial view rank if the default cache is not clustered but other caches are. A better solution would be to simply cache the cache manager on construction, and if a new version for a clustered cache is created and the rank is not set yet (i.e. in cases such as AS7 where cache manager is started before the servers themselves), use the cached cache manager's transport to quickly calculate the view rank.
> This won't happen with Memcached because you can only interact with the default cache.

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