Robert Metzger created FLINK-31840:
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Summary: 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
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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