GitHub user dongjoon-hyun opened a pull request:
https://github.com/apache/spark/pull/18203
[SPARK-20954][SQL] Simple `DESCRIBE` result should be compatible with
previous Spark
## What changes were proposed in this pull request?
After [SPARK-20067](https://issues.apache.org/jira/browse/SPARK-20067), a
simple `DESCRIBE` (without `EXTENDED`/`FORMATTED`) shows the following result.
This is incompatible with Spark 2.1.1. This PR removes the column header line
in case of the simple `DESCRIBE` command.
*MASTER and BRANCH-2.2*
```
scala> sql("desc t").show(false)
+----------+---------+-------+
|col_name |data_type|comment|
+----------+---------+-------+
|# col_name|data_type|comment|
|a |int |null |
+----------+---------+-------+
```
*SPARK 2.1.1 and this PR*
```
scala> sql("desc t").show(false)
+--------+---------+-------+
|col_name|data_type|comment|
+--------+---------+-------+
|a |int |null |
+--------+---------+-------+
```
## How was this patch tested?
Pass the Jenkins with the updated test suites.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/dongjoon-hyun/spark SPARK-20954
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/18203.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 #18203
----
commit a0b8b1d1e07c8d4a77d123150041537cca442167
Author: Dongjoon Hyun <[email protected]>
Date: 2017-06-05T06:28:51Z
[SPARK-20954][SQL] Simple `DESCRIBE` result should be compatible with
previous Spark and Hive.
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