[jira] [Created] (MAHOUT-1738) Flavor support for H2o in-core matrices

["Dmitriy Lyubimov (JIRA)" <ji...@apache.org>]

Dmitriy Lyubimov created MAHOUT-1738:
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             Summary: Flavor support for H2o in-core matrices
                 Key: MAHOUT-1738
                 URL: https://issues.apache.org/jira/browse/MAHOUT-1738
             Project: Mahout
          Issue Type: Improvement
            Reporter: Dmitriy Lyubimov
            Assignee: Anand Avati
             Fix For: 0.10.2


Could be as simple as initializing with one of standard flavors. 

Feel free to enlist me for help.

E.g. %*% requires it : 

- ddsvd - naive - q=1 *** FAILED ***
  java.lang.RuntimeException: water.DException$DistributedException: from /130.35.26.220:54321; by class org.apache.mahout.h2obindings.ops.MapBlock$1MRTaskBMF; class java.lang.UnsupportedOperationException: Flavor support not implemented for this matrix.                                
  at water.MRTask.getResult(MRTask.java:263)
  at water.MRTask.doAll(MRTask.java:218)
  at water.MRTask.doAll(MRTask.java:215)
  at org.apache.mahout.h2obindings.ops.MapBlock.exec(MapBlock.java:111)
  at org.apache.mahout.h2obindings.H2OEngine$.tr2phys(H2OEngine.scala:111)
  at org.apache.mahout.h2obindings.H2OEngine$.toPhysical(H2OEngine.scala:89)
  at org.apache.mahout.math.drm.logical.CheckpointAction.checkpoint(CheckpointAction.scala:41)
  at org.apache.mahout.math.decompositions.DSSVD$.dssvd(DSSVD.scala:49)
  at org.apache.mahout.math.decompositions.package$.dssvd(package.scala:87)
  at org.apache.mahout.math.decompositions.DistributedDecompositionsSuiteBase$class.dssvdNaive(DistributedDecompositionsSuiteBase.scala:123)
  ...
  Cause: water.DException$DistributedException: from /130.35.26.220:54321; by class org.apache.mahout.h2obindings.ops.MapBlock$1MRTaskBMF; class java.lang.UnsupportedOperationException: Flavor support not implemented for this matrix.                                                     
  at org.apache.mahout.math.AbstractMatrix.getFlavor(AbstractMatrix.java:827)
  at org.apache.mahout.math.scalabindings.MMul$.apply(MMul.scala:37)
  at org.apache.mahout.math.scalabindings.RLikeMatrixOps.$percent$times$percent(RLikeMatrixOps.scala:27)
  at org.apache.mahout.math.decompositions.DSSVD$$anonfun$1.apply(DSSVD.scala:47)
  at org.apache.mahout.math.decompositions.DSSVD$$anonfun$1.apply(DSSVD.scala:45)
  at org.apache.mahout.h2obindings.ops.MapBlockHelper$.exec(MapBlockHelper.scala:47)
  at org.apache.mahout.h2obindings.ops.MapBlockHelper.exec(MapBlockHelper.scala)
  at org.apache.mahout.h2obindings.ops.MapBlock$1MRTaskBMF.map(MapBlock.java:105)
  at water.MRTask.compute2(MRTask.java:428)
  at water.MRTask.compute2(MRTask.java:372)
  ...




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