GitHub user HyukjinKwon opened a pull request:
https://github.com/apache/spark/pull/13912
[SPARK-16216][SQL] CSV data source does not write date and timestamp
correctly
## What changes were proposed in this pull request?
This PR corrects CSV data sources in order to write `DateType` and
`TimestampType` correctly just like JSON data source.
Currently this writes the data as below:
```
+----------------+
| date|
+----------------+
|1440637200000000|
|1414459800000000|
|1454040000000000|
+----------------+
```
This PR make this write dates and timestamps in a formatted string as below:
- **TimestampType**
- With `dateFormat` option (e.g. `dd/MM/yyyy HH:mm`)
```
+----------------+
| date|
+----------------+
|2015/08/26 18:00|
|2014/10/27 18:30|
|2016/01/28 20:00|
+----------------+
```
- Without `dateFormat` option
```
+---------------------+
| date|
+---------------------+
|2015-08-26 18:00:00.0|
|2014-10-27 18:30:00.0|
|2016-01-28 20:00:00.0|
+---------------------+
```
- **DateType**
- With `dateFormat` option (e.g. `yyyy/MM/dd`)
```
+----------+
| date|
+----------+
|2015/08/26|
|2014/10/27|
|2016/01/28|
+----------+
```
- Without `dateFormat` option
```
+----------+
| date|
+----------+
|2015-08-26|
|2014-10-27|
|2016-01-28|
+----------+
```
## How was this patch tested?
Unit tests in `CsvSuite.scala`.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/HyukjinKwon/spark SPARK-16216
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/13912.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 #13912
----
commit 78785e078464c93541edd23abc9276800714cfdd
Author: hyukjinkwon <[email protected]>
Date: 2016-06-26T06:00:17Z
CSV data source does not write date and timestamp correctly
commit 79a290a654e67f678c0d7c5ba52825a75b089a70
Author: hyukjinkwon <[email protected]>
Date: 2016-06-26T06:08:50Z
Fix comments
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