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Posted to issues@streampipes.apache.org by GitBox <gi...@apache.org> on 2022/11/26 13:44:12 UTC
[GitHub] [streampipes] dominikriemer opened a new issue, #453: NullPointer Exception in Flink pattern detection processor
dominikriemer opened a new issue, #453:
URL: https://github.com/apache/streampipes/issues/453
There is a bug in the Sequence pattern detection processing for Flink currently leading to a Nullpointer Exception in this method:
```
@Override
public void processElement1(Event value, Context ctx, Collector<Event> out) throws Exception
{
state.update(new EventStorage(System.currentTimeMillis(), value));
}
```
See error log:
```
pipeline-elements-all-flink_1 | Caused by: java.lang.NullPointerException
pipeline-elements-all-flink_1
| at org.apache.streampipes.processors.pattern.detection.flink.processor.sequence.Sequence.processElement1(Sequence.java:48)
pipeline-elements-all-flink_1
| at org.apache.streampipes.processors.pattern.detection.flink.processor.sequence.Sequence.processElement1(Sequence.java:26)
pipeline-elements-all-flink_1
| at org.apache.flink.streaming.api.operators.co.LegacyKeyedCoProcessOperator.processElement1(LegacyKeyedCoProcessOperator.java:81)
pipeline-elements-all-flink_1
| at org.apache.flink.streaming.runtime.io.StreamTwoInputProcessor.processInput(StreamTwoInputProcessor.java:259)
pipeline-elements-all-flink_1
| at org.apache.flink.streaming.runtime.tasks.StreamTask.processInput(StreamTask.java:279)
pipeline-elements-all-flink_1
| at org.apache.flink.streaming.runtime.tasks.StreamTask.run(StreamTask.java:301)
pipeline-elements-all-flink_1
| at org.apache.flink.streaming.runtime.tasks.StreamTask.invoke(StreamTask.java:406)
pipeline-elements-all-flink_1
| at org.apache.flink.runtime.taskmanager.Task.doRun(Task.java:705)
pipeline-elements-all-flink_1
| at org.apache.flink.runtime.taskmanager.Task.run(Task.java:530)
pipeline-elements-all-flink_1
| at java.lang.Thread.run(Unknown Source)
```
Imported from Jira [STREAMPIPES-283](https://issues.apache.org/jira/browse/STREAMPIPES-283). Original Jira may contain additional context.
Reported by: wiener.
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Re: [I] NullPointer Exception in Flink pattern detection processor
Posted by "bossenti (via GitHub)" <gi...@apache.org>.
bossenti closed issue #453: NullPointer Exception in Flink pattern detection processor
URL: https://github.com/apache/streampipes/issues/453
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Re: [I] NullPointer Exception in Flink pattern detection processor
Posted by "bossenti (via GitHub)" <gi...@apache.org>.
bossenti commented on issue #453:
URL: https://github.com/apache/streampipes/issues/453#issuecomment-2042435355
Flink is in experimental stage currently
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