GitHub user dongjoon-hyun opened a pull request:
https://github.com/apache/spark/pull/15357
[SPARK-17328][SQL] Fix NPE with EXPLAIN DESCRIBE TABLE
## What changes were proposed in this pull request?
This PR fixes the following NPE scenario.
**Reported Error Scenario**
```
scala> sql("EXPLAIN DESCRIBE TABLE x").show(truncate = false)
INFO SparkSqlParser: Parsing command: EXPLAIN DESCRIBE TABLE x
java.lang.NullPointerException
```
## How was this patch tested?
Pass the Jenkins test with a new test case.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/dongjoon-hyun/spark SPARK-17328
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/15357.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 #15357
----
commit 4b601951e4b3311501363ac4de864c4bf9a1a756
Author: Dongjoon Hyun <dongj...@apache.org>
Date: 2016-10-05T04:24:27Z
[SPARK-17328][SQL] Fix NPE with EXPLAIN DESCRIBE TABLE
----
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