GitHub user clockfly opened a pull request:
https://github.com/apache/spark/pull/13470
[SPARK-15733][SQL] Makes the explain output less verbose by hiding some
verbose output like None, null, empty List, and etc.
## What changes were proposed in this pull request?
This PR makes the explain output less verbose by hiding some verbose output
like `None`, `null`, empty List `[]`, empty set `{}`, and etc.
**Before change**:
```
== Physical Plan ==
ExecutedCommand
: +- ShowTablesCommand None, None
```
**After change**:
```
== Physical Plan ==
ExecutedCommand
: +- ShowTablesCommand
```
## How was this patch tested?
Manual test.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/clockfly/spark verbose_breakdown_4
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/13470.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 #13470
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