beliefer opened a new pull request, #26321:
URL: https://github.com/apache/flink/pull/26321
## What is the purpose of the change
This PR aim to fix the OOM for `SlidingEventTimeWindows`.
`SlidingEventTimeWindows` has potential OOM risks if the window size is big
and the slide is small. The OOM issue show below.
```
Caused by: java.util.concurrent.ExecutionException:
java.lang.OutOfMemoryError
at
java.base/java.util.concurrent.ForkJoinTask.reportExecutionException(ForkJoinTask.java:605)
at
java.base/java.util.concurrent.ForkJoinTask.get(ForkJoinTask.java:981)
Caused by: java.lang.OutOfMemoryError
at
java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499)
at
java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:480)
at
java.base/java.util.concurrent.ForkJoinTask.getThrowableException(ForkJoinTask.java:564)
at
java.base/java.util.concurrent.ForkJoinTask.reportExecutionException(ForkJoinTask.java:604)
... 1 more
Caused by: java.lang.OutOfMemoryError: Requested array size exceeds VM limit
at java.base/java.util.ArrayList.<init>(ArrayList.java:156)
at
org.apache.flink.streaming.api.windowing.assigners.SlidingEventTimeWindows.assignWindows(SlidingEventTimeWindows.java:72)
at
org.apache.flink.streaming.runtime.operators.windowing.SlidingEventTimeWindowsTest.testWindowAssignment2(SlidingEventTimeWindowsTest.java:79)
at java.base/java.lang.reflect.Method.invoke(Method.java:568)
```
## Brief change log
Fix the OOM for `SlidingEventTimeWindows`.
## Verifying this change
This change added tests and can be verified as follows:
- *Added test that validates that `IllegalArgumentException`*
## 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, Kubernetes/Yarn, ZooKeeper: (no)
- The S3 file system connector: (no)
## Documentation
- Does this pull request introduce a new feature? (no)
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