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https://issues.apache.org/jira/browse/MAHOUT-1050?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13428829#comment-13428829
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Sebastian Schelter commented on MAHOUT-1050:
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Hi Renaud,
I really like the idea of having a mutable in-memory datamodel. I think however
that such an implementation should be threadsafe and I don't think that this is
already the case with your implementation.
What do you think? Could you enhance the patch to make the model threadsafe?
Btw: Your patch doesn't adhere to Mahout style guidelines and Apache doesn't
allow @author tags.
> mutable in-memory datamodel
> ---------------------------
>
> Key: MAHOUT-1050
> URL: https://issues.apache.org/jira/browse/MAHOUT-1050
> Project: Mahout
> Issue Type: Improvement
> Components: Collaborative Filtering
> Affects Versions: 0.7
> Environment: independant
> Reporter: Renaud Richardet
> Assignee: Sean Owen
> Priority: Minor
> Fix For: 0.7
>
> Attachments: MutableDataModel.java
>
>
> I could not find an in-memory DataModel that supports setPreference /
> removePreference / refresh. Instead, they all "recreate" a new
> GenericDataModel anytime one adds or remove preferences.
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