GitHub user dongjoon-hyun opened a pull request:
https://github.com/apache/spark/pull/11530
[SPARK-13692] Fix trivial Coverity/Checkstyle defects
## What changes were proposed in this pull request?
This issue fixes the following potential bugs and Java coding style
detected by Coverity and Checkstyle.
- Implement both null and type checking in equals functions.
- Fix wrong type casting logic in SimpleJavaBean2.equals.
- Add `implement Cloneable` to `UTF8String` and `SortedIterator`.
- Remove dereferencing before null check in `AbstractBytesToBytesMapSuite`.
- Fix coding style: Add '{}' to single `for` statement in mllib examples.
- Remove unused imports in `ColumnarBatch`.
Please note that the last two checkstyle errors exist on newly added
commits after [SPARK-13583](https://issues.apache.org/jira/browse/SPARK-13583).
## How was this patch tested?
manual via `./dev/lint-java` and Coverity site.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/dongjoon-hyun/spark SPARK-13692
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/spark/pull/11530.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 #11530
----
commit 9f74e82c81e4677ea3dd8e2985088c958f90ebcf
Author: Dongjoon Hyun <dongj...@apache.org>
Date: 2016-03-04T22:56:42Z
Fix potential bugs and Java coding style.
* Implement both null and type checking in equals functions.
* Fix wrong type casting logic in SimpleJavaBean2.equals.
* Add `implement Cloneable` to `UTF8String` and `SortedIterator`.
* Remove dereferencing before null check in
`AbstractBytesToBytesMapSuite`.
* Fix coding style: Add '{}' to single `for` statement in mllib examples.
* Remove unused imports in `ColumnarBatch`.
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