GitHub user xccui opened a pull request:
https://github.com/apache/flink/pull/4977
[FLINK-7996] [table] Add support for (left.time = right.time) predicates to
window join
## What is the purpose of the change
This PR adds `left.time = right.time` predicates support for time-windowed
join in Table API and SQL.
## Brief change log
- Change `WindowJoinUtil.extractWindowBoundsFromPredicate()` to accept
single euqi-time predicate.
- Add tests for the new predicate.
- Update the documents.
## Verifying this change
This change can be verified by the added tests in `JoinTest` and
`JoinITCase`.
## 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: (yes / no / don't know)
- The runtime per-record code paths (performance sensitive): (no)
- Anything that affects deployment or recovery: JobManager (and its
components), Checkpointing, Yarn/Mesos, ZooKeeper: (no)
- The S3 file system connector: (no)
## Documentation
- Does this pull request introduce a new feature? (no)
- If yes, how is the feature documented? (docs)
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/xccui/flink FLINK-7996
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/flink/pull/4977.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 #4977
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commit 03d54c672f4a529c1cf0e3af3e74d60fb37febb7
Author: Xingcan Cui <[email protected]>
Date: 2017-11-07T17:17:57Z
[FLINK-7996][table]Add support for (left.time = right.time) predicates to
window join
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