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https://issues.apache.org/jira/browse/MAHOUT-1059?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13450197#comment-13450197
 ] 

Hudson commented on MAHOUT-1059:
--------------------------------

Integrated in Mahout-Quality #1653 (See 
[https://builds.apache.org/job/Mahout-Quality/1653/])
    MAHOUT-1059 - Remove memory hungry test (Revision 1381780)
MAHOUT-1059 - Oops.  Added test without the class.  This class isn't really 
ready, but the build should work. (Revision 1381778)

     Result = FAILURE
tdunning : 
http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1381780
Files : 
* 
/mahout/trunk/math/src/test/java/org/apache/mahout/math/FileBasedSparseBinaryMatrixTest.java

tdunning : 
http://svn.apache.org/viewcvs.cgi/?root=Apache-SVN&view=rev&rev=1381778
Files : 
* 
/mahout/trunk/math/src/main/java/org/apache/mahout/math/FileBasedSparseBinaryMatrix.java

                
> New matrix extensions
> ---------------------
>
>                 Key: MAHOUT-1059
>                 URL: https://issues.apache.org/jira/browse/MAHOUT-1059
>             Project: Mahout
>          Issue Type: Improvement
>          Components: Math
>            Reporter: Ted Dunning
>             Fix For: 0.8
>
>         Attachments: 
> 0001-MAHOUT-1059-Added-Centroid-WeightedVector-Delegating.patch, 
> 0001-MAHOUT-1059-Added-Centroid-WeightedVector-Delegating.patch, 
> 0001-MAHOUT-1059-Added-Centroid-WeightedVector-Delegating.patch, 
> 0001-MAHOUT-1059-Added-Centroid-WeightedVector-Delegating.patch, 
> 0002-MAHOUT-1059-Stylistic-cleanups.patch, 
> 0002-MAHOUT-1059-Stylistic-cleanups.patch, 
> 0002-MAHOUT-1059-Stylistic-cleanups.patch, 
> 0003-MAHOUT-1059-Add-generic-vector-test.patch, 
> 0003-MAHOUT-1059-Add-generic-vector-test.patch, 
> 0004-MAHOUT-1059-Indentation.patch, 0004-MAHOUT-1059-Indentation.patch, 
> 0005-MAHOUT-1059-Abstract-the-idea-of-a-cached-length.patch, 
> 0006-MAHOUT-1059-Additional-test-for-weighted-vectors.patch, 
> DelegatingVectorTest.java
>
>
> The upcoming clustering needs several capabilities to support different 
> operations.  These include some matrix extensions for adding behaviors to 
> different kinds of matrices.  Also there is a file based matrix that uses 
> mmap to access a file as if it were a matrix in shared memory.  Since this is 
> off-heap and shared between processes, it can seriously help some programs.

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