GitHub user soniclavier opened a pull request:
https://github.com/apache/flink/pull/2736
[FLINK-4174] Enhance evictor functionality
The PR implements
[FLINK-4174](https://issues.apache.org/jira/browse/FLINK-4174) Enhance window
evictor as proposed in
[FLIP-4](https://cwiki.apache.org/confluence/display/FLINK/FLIP-4+%3A+Enhance+Window+Evictor)
Changes made:
- Modified the Evictor API, added two new methods evictBefore and
evictAfter. Removed existing evict method
- Modified the corresponding implementations of CountEvictor, DeltaEvictor
and TimeEvictor
- Created EvictorContext in the class EvictingWindowOperator, which is
passed to the evictor methods
- Created TimestampedValue class which holds the value with corresponding
timestamp. This class is exposed to the user via the evictBefore and evictAfter
methods.
- Modified EvictingWindowOperator class
- to call evictBefore before calling window function and evictAfter
after calling window function.
- create FluentIterable<TimestampedValue<IN>> from
Iterable<StreamRecord<IN>> contents, which is passed to the evictor methods.
- to clear the windowstate and add the remaining element(after the
eviction) back to the state. (this fixes
[FLINK-4369](https://issues.apache.org/jira/browse/FLINK-4369))
- Added test cases in EvictingWindowOperatorTest.
You can merge this pull request into a Git repository by running:
$ git pull https://github.com/soniclavier/flink FLINK-4174
Alternatively you can review and apply these changes as the patch at:
https://github.com/apache/flink/pull/2736.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 #2736
----
commit bfd4fb509463dea0dc86e702c3aad0b0b9e70ff2
Author: Vishnu Viswanath <vishnu.viswanat...@gmail.com>
Date: 2016-10-31T23:21:04Z
[FLINK-4174] Enhance evictor functionality
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