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https://issues.apache.org/jira/browse/MAHOUT-977?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13210452#comment-13210452
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Hudson commented on MAHOUT-977:
-------------------------------
Integrated in Mahout-Quality #1355 (See
[https://builds.apache.org/job/Mahout-Quality/1355/])
MAHOUT-977 add multiple anonymous user support to DataModel (Revision
1245615)
Result = SUCCESS
srowen : http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1245615
Files :
*
/mahout/trunk/core/src/main/java/org/apache/mahout/cf/taste/impl/model/PlusAnonymousConcurrentUserDataModel.java
*
/mahout/trunk/core/src/main/java/org/apache/mahout/cf/taste/impl/model/PlusAnonymousUserDataModel.java
*
/mahout/trunk/core/src/test/java/org/apache/mahout/cf/taste/impl/model/PlusAnonymousConcurrentUserDataModelTest.java
> Thread-safe version of PlusAnonymousUserDataModel with multiple concurrent
> users
> --------------------------------------------------------------------------------
>
> Key: MAHOUT-977
> URL: https://issues.apache.org/jira/browse/MAHOUT-977
> Project: Mahout
> Issue Type: Improvement
> Components: Collaborative Filtering
> Affects Versions: 0.6
> Reporter: Aleksei Udatšnõi
> Assignee: Sean Owen
> Priority: Minor
> Fix For: 0.7
>
> Attachments: MAHOUT-977.patch
>
>
> This is a suggested improvement to PlusAnonymousUserDataModel.
> Currently the ID of the anonymous user is fixed to Long.MIN_VALUE. Only one
> set
> of temp data can be inserted into the model and used at one time.
> I propose the change to enable multiple users to insert into this
> model concurrently in a thread-safe manner.
> The idea is to define a pool of available anonymous user IDs. Every
> time a new anonymous user makes a request, the next available
> TEMP_USER_ID is pulled from the queue. After recommendations are
> retrieved, the TEMP_USER_ID can be returned to the pool.
> The discussion about this topic can be found in:
> http://mail-archives.apache.org/mod_mbox/mahout-dev/201202.mbox/%3CCAEccTywC7QJuAJj-u3C1C=WW0yEeBcScUE6Kmj=bedbrxop...@mail.gmail.com%3E
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