GitHub user gatorsmile opened a pull request:
https://github.com/apache/spark/pull/20215
[SPARK-23001] [SQL] Fix NullPointerException when DESC a database with NULL
description
## What changes were proposed in this pull request?
When users' DB description is NULL, users might hit `NullPointerException`.
This PR is to fix the issue.
## How was this patch tested?
Added test cases
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/gatorsmile/spark SPARK-23001
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/20215.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 #20215
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commit 137fd7a268b23ca52ca190d5b630503e6dc73404
Author: gatorsmile <gatorsmile@...>
Date: 2018-01-10T03:48:06Z
fix
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