GitHub user twalthr opened a pull request:
https://github.com/apache/flink/pull/4732
[FLINK-7426] [table] Support null values in keys
## What is the purpose of the change
This PR adds support for null values in keys by not relying on the default
`KeySelector`.
## Brief change log
- New `CRowKeySelector`
## Verifying this change
Two tests have been extended that would fail otherwise.
## 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): yes, for
Table programs
- 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/twalthr/flink FLINK-7426
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/flink/pull/4732.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 #4732
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commit df3e28e4427ee52986a3b2eaa508ff546a062c6d
Author: twalthr <twal...@apache.org>
Date: 2017-09-27T11:05:44Z
[FLINK-7426] [table] Support null values in keys
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