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https://issues.apache.org/jira/browse/FLINK-31840?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Robert Metzger reassigned FLINK-31840:
--------------------------------------
Assignee: lincoln lee
> NullPointerException in
> operators.window.slicing.SliceAssigners$AbstractSliceAssigner.assignSliceEnd
> ----------------------------------------------------------------------------------------------------
>
> Key: FLINK-31840
> URL: https://issues.apache.org/jira/browse/FLINK-31840
> Project: Flink
> Issue Type: Bug
> Reporter: Robert Metzger
> Assignee: lincoln lee
> Priority: Major
> Fix For: 1.16.0
>
>
> While running a Flink SQL Query (with a hop window), I got this error.
> {code}
> Caused by:
> org.apache.flink.streaming.runtime.tasks.ExceptionInChainedOperatorException:
> Could not forward element to next operator
> at
> org.apache.flink.streaming.runtime.tasks.CopyingChainingOutput.pushToOperator(CopyingChainingOutput.java:99)
> at
> org.apache.flink.streaming.runtime.tasks.CopyingChainingOutput.collect(CopyingChainingOutput.java:57)
> at
> org.apache.flink.streaming.runtime.tasks.CopyingChainingOutput.collect(CopyingChainingOutput.java:29)
> at
> org.apache.flink.streaming.api.operators.CountingOutput.collect(CountingOutput.java:56)
> at
> org.apache.flink.streaming.api.operators.CountingOutput.collect(CountingOutput.java:29)
> at StreamExecCalc$11.processElement(Unknown Source)
> at
> org.apache.flink.streaming.runtime.tasks.CopyingChainingOutput.pushToOperator(CopyingChainingOutput.java:82)
> ... 23 more
> Caused by: java.lang.NullPointerException
> at
> org.apache.flink.table.runtime.operators.window.slicing.SliceAssigners$AbstractSliceAssigner.assignSliceEnd(SliceAssigners.java:558)
> at
> org.apache.flink.table.runtime.operators.aggregate.window.LocalSlicingWindowAggOperator.processElement(LocalSlicingWindowAggOperator.java:114)
> at
> org.apache.flink.streaming.runtime.tasks.CopyingChainingOutput.pushToOperator(CopyingChainingOutput.java:82)
> ... 29 more
> {code}
> It was caused by a timestamp field containing NULL values.
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