Nick Pentreath created SPARK-20768:
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             Summary: PySpark FPGrowth does not expose numPartitions (expert)  
param
                 Key: SPARK-20768
                 URL: https://issues.apache.org/jira/browse/SPARK-20768
             Project: Spark
          Issue Type: Improvement
          Components: ML, PySpark
    Affects Versions: 2.2.0
            Reporter: Nick Pentreath
            Priority: Minor


The PySpark API for {{FPGrowth}} does not expose the {{numPartitions}} param. 
While it is an "expert" param, the general approach elsewhere is to expose 
these on the Python side (e.g. {{aggregationDepth}} and intermediate storage 
params in {{ALS}})



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