GitHub user cloud-fan opened a pull request:
https://github.com/apache/spark/pull/18378
[SPARK-21163][SQL] DataFrame.toPandas should respect the data type
## What changes were proposed in this pull request?
Currently we convert a spark DataFrame to Pandas Dataframe by
`pd.DataFrame.from_records`. It infers the data type from the data and doesn't
respect the spark DataFrame Schema. This PR fixes it.
## How was this patch tested?
a new regression test
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/cloud-fan/spark to_pandas
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/18378.patch
To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:
This closes #18378
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commit 8a033fb9ad6da0e0d69b90c9e4b00392d8e65ad2
Author: Wenchen Fan <wenc...@databricks.com>
Date: 2017-06-21T15:44:13Z
DataFrame.toPandas should respect the data type
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