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https://issues.apache.org/jira/browse/MAHOUT-411?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12877133#action_12877133
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Sean Owen commented on MAHOUT-411:
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I'll commit a variation on this patch shortly. Mostly, it's that the patch
rearranges imports and changes whitespace, and I'd say it's best to leave that
as-is. I also simplified temp file handling in the test since we have a
particular mechanism for that already. But the substance of the patch is just
fine.
> Configurable reload interval in FileDataModel
> ---------------------------------------------
>
> Key: MAHOUT-411
> URL: https://issues.apache.org/jira/browse/MAHOUT-411
> Project: Mahout
> Issue Type: Improvement
> Components: Collaborative Filtering
> Reporter: Sebastian Schelter
> Priority: Minor
> Fix For: 0.4
>
> Attachments: MAHOUT-411.patch
>
>
> Patch to enable the following usecase:
> * all preferences are kept in a text file and loaded via a FileDataModel
> * at some point in time the text file is completely overwritten with more
> recent preferences
> * an explicit refresh() on the FileDataModel is called
> With the current FileDataModel, one could not see the new preferences as it
> would only have refreshed the whole file if that was modified more than one
> minute ago. And I don't want to wait that long to trigger the explicit
> refresh.
> The patch makes the interval configurable with keeping the old interval
> length as default.
> Hope I understood the intention of the refreshing mechanism right.
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