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From "Gary Dusbabek (JIRA)" <j...@apache.org>
Subject [jira] Updated: (CASSANDRA-1756) DatabaseDescriptor static initialization circular reference when initialized through call to StorageService.instance.initClient
Date Fri, 19 Nov 2010 13:46:13 GMT

     [ https://issues.apache.org/jira/browse/CASSANDRA-1756?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Gary Dusbabek updated CASSANDRA-1756:
-------------------------------------

    Attachment: v0-0001-StorageService.initClient-unit-test-that-never-finishe.txt

> DatabaseDescriptor static initialization circular reference when initialized through
call to StorageService.instance.initClient 
> --------------------------------------------------------------------------------------------------------------------------------
>
>                 Key: CASSANDRA-1756
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-1756
>             Project: Cassandra
>          Issue Type: Bug
>          Components: Core
>    Affects Versions: 0.7.0
>            Reporter: Erik Onnen
>            Assignee: Gary Dusbabek
>            Priority: Minor
>             Fix For: 0.7.0
>
>         Attachments: CS-1756, v0-0001-StorageService.initClient-unit-test-that-never-finishe.txt
>
>
> In trunk, attempting to invoke StorageService.instance.initClient results in an NPE due
to static definition field ordering in StorageService and a circular reference from DatabaseDescriptor
back into an uninitialized field (scheduledTasks). Changing the ordering of the static fields
such that scheduledTasks is defined before the static partitioner fixes the issue.
> I've also marked the scheduledTasks executor as final as it doesn't seem to make sense
changing it.
> All tests pass with this change locally.
> I suspect this hasn't surfaced in tests as calling initServer first in the same JVM will
allow later calls to initClient to see the correctly defined scheduledTasks fields.
> I'm following the recommended way to do this from ClientOnlyExample, if this isn't the
right way to initialize things let me know.

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