Single Column Bug

[ishengyang]

Sometimes, when I have only 1 feature, the .fit() process fails with a bug.
However, if I combine 2 or more such bugged features, the .fit() process won't fail.

Here is the beginning of the error message when it fails.

Py4JJavaError: An error occurred while calling o1063.fit.
: org.apache.spark.SparkException: Job aborted due to stage failure: Task 2 in stage 154.0 failed 4 times, most recent failure: Lost task 2.3 in stage 154.0 (TID 791, 10.231.246.65, executor 3): java.util.NoSuchElementException: key not found: 3

[imatiach-msft]

@ishengyang Sorry about the issues you are having. I think this is a different issue which has been fixed:
#399
Please also see:
#406
and related issue:
#397
However, the fix was after the 0.14 release, it should be in 0.15. You can use the latest build from master instead, eg:

--packages
com.microsoft.ml.spark:mmlspark_2.11:0.14.dev13+1.g58a2027c
and --repositories
https://mmlspark.azureedge.net/maven

[imatiach-msft]

@ishengyang closing this issue, please let us know if you are still seeing it in v0.16