GitHub user yestinchen opened a pull request:
https://github.com/apache/flink/pull/4479
[FLINK-7309][hotfix] fix NullPointerException when selecting null fields
## What is the purpose of the change
This pull request addresses FLINK-7309, adds null check before applying
unboxing on input fields.
## Brief change log
- Add null check before applying unboxing on input fields.
## Verifying this change
This change added tests and can be verified as follows:
- Added test case: select null field from a Timestamp type field.
## Does this pull request potentially affect one of the following parts:
- Dependencies (does it add or upgrade a dependency): (no)
- The public API, i.e., is any changed class annotated with
`@Public(Evolving)`: (no)
- The serializers: (no)
- The runtime per-record code paths (performance sensitive): (no)
- Anything that affects deployment or recovery: JobManager (and its
components), Checkpointing, Yarn/Mesos, ZooKeeper: (no)
## Documentation
- Does this pull request introduce a new feature? (no)
- If yes, how is the feature documented? (not applicable)
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/yestinchen/flink FLINK-7309
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/flink/pull/4479.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 #4479
----
commit 7cbbd13b723df11e72ccb115b5266104b0b01183
Author: Yestin <[email protected]>
Date: 2017-08-04T09:21:03Z
[FLINK-7309][hotfix] fix NullPointerException when selecting null fields.
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