Github user asfgit closed the pull request at:
https://github.com/apache/incubator-hivemall/pull/100
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GitHub user maropu opened a pull request:
https://github.com/apache/incubator-hivemall/pull/100
[HOTFIX] Update documents for DataFrame in Spark
## What changes were proposed in this pull request?
This pr updated documents for `DataFrame` in Spark.
## What type of PR is
