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Posted to issues@spark.apache.org by "Jeff Zhang (JIRA)" <ji...@apache.org> on 2016/01/20 23:51:40 UTC

[jira] [Created] (SPARK-12942) Provide option to allow control the precision of numerical type for DataFrameWriter

Jeff Zhang created SPARK-12942:
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             Summary: Provide option to allow control the precision of numerical type for DataFrameWriter
                 Key: SPARK-12942
                 URL: https://issues.apache.org/jira/browse/SPARK-12942
             Project: Spark
          Issue Type: Improvement
          Components: ML, SQL
            Reporter: Jeff Zhang


This is useful for libsvm where most of features are double, and this can reduce the file size and gain some performance improvement when reading the libsvm file in training. 

So it can be libsvm specific or global setting which apply to other data sources.   We can discuss it here.  \cc [~mengxr]



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