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https://issues.apache.org/jira/browse/WHIRR-246?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13002723#comment-13002723
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David Alves commented on WHIRR-246:
-----------------------------------
Another issue I just remembered is locking. StateStores should probably lock
state pending updates so that no concurrent updates are performed on stale
state.
> Single place to store/load cluster state
> ----------------------------------------
>
> Key: WHIRR-246
> URL: https://issues.apache.org/jira/browse/WHIRR-246
> Project: Whirr
> Issue Type: Improvement
> Reporter: David Alves
> Priority: Minor
> Attachments: WHIRR-246.patch, WHIRR-246.patch
>
>
> Right now cluster state is written and read from the
> ~/.whirr/cluster-name/instances file and logic to write and update it is
> spread between the Service and DestroyInstanceCommand (that I know of).
> Since for WHIRR-214 the file must be updated (in another class) and for
> WHIRR-238 an altogether different method of storing cluster state will be
> required I think it might be time to move the read/write state logic to its
> own file (or factory in the future).
> I'll attach a very preliminary patch just to get some feedback.
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