[jira] [Commented] (MAHOUT-1626) Support for required quasi-algebraic operations and starting with aggregating rows/blocks

[ASF GitHub Bot (JIRA)]

    [ 
https://issues.apache.org/jira/browse/MAHOUT-1626?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14292282#comment-14292282
 ] 

ASF GitHub Bot commented on MAHOUT-1626:
----------------------------------------

Github user dlyubimov commented on a diff in the pull request:

    https://github.com/apache/mahout/pull/62#discussion_r23556922
  
    --- Diff: h2o/src/main/scala/org/apache/mahout/h2obindings/H2OEngine.scala 
---
    @@ -32,6 +32,7 @@ import org.apache.mahout.common.{Hadoop1HDFSUtil, 
HDFSUtil}
     object H2OEngine extends DistributedEngine {
       // By default, use Hadoop 1 utils
       var hdfsUtils: HDFSUtil = Hadoop1HDFSUtil
    +  val operations: DistributedOperations = null
    --- End diff --
    
    I guess in case of H20 this will break with NPE... Perhaps we can make it 
an Option[...] and gracefully report capability is not supported by engine if 
it happens to be None. 


> Support for required quasi-algebraic operations and starting with aggregating 
> rows/blocks
> -----------------------------------------------------------------------------------------
>
>                 Key: MAHOUT-1626
>                 URL: https://issues.apache.org/jira/browse/MAHOUT-1626
>             Project: Mahout
>          Issue Type: New Feature
>          Components: Math
>    Affects Versions: 1.0
>            Reporter: Gokhan Capan
>             Fix For: 1.0
>
>




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