GitHub user gatorsmile opened a pull request:
https://github.com/apache/spark/pull/12828
[SPARK-14993] Fix Partition Discovery Inconsistency when Input is a Path to
Parquet File
#### What changes were proposed in this pull request?
When we load a dataset, if we set the path to ```/path/a=1```, we will not
take `a` as the partitioning column. However, if we set the path to
```/path/a=1/file.parquet```, we take `a` as the partitioning column and it
shows up in the schema.
This PR is to fix the issue. If users set the path to a Parquet file, we do
not include the partitioning columns into the schema.
The related PRs:
- https://github.com/apache/spark/pull/9651
- https://github.com/apache/spark/pull/10211
#### How was this patch tested?
Added a couple of test cases
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/gatorsmile/spark readPartitionedTable
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/12828.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 #12828
----
commit 461441c8acdfce8e175f34ba44b0d08dea761225
Author: gatorsmile <[email protected]>
Date: 2016-05-02T02:29:49Z
initial fix.
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