[MAHOUT-1738] Flavor support for H2o in-core matrices

• Type: Improvement
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 0.10.2
• Epic Link: Samsara-framework
• Sprint: Jul-2015
• Assignee: Anand Avati
• Reporter: Dmitriy Lyubimov
• Created: 11/Jun/15 00:14
• Updated: 07/Aug/15 15:56
• Resolved: 24/Jun/15 18:37

Description

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)
  ...