[jira] [Created] (KAFKA-10645) Forwarding a record from a punctuator sometimes it results in a NullPointerException

["Filippo Machi (Jira)" <ji...@apache.org>]

Filippo Machi created KAFKA-10645:
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             Summary: Forwarding a record from a punctuator sometimes it results in a NullPointerException
                 Key: KAFKA-10645
                 URL: https://issues.apache.org/jira/browse/KAFKA-10645
             Project: Kafka
          Issue Type: Bug
          Components: clients
    Affects Versions: 2.5.0
            Reporter: Filippo Machi


Hello,
I am working on a java kafka stream application (v. 2.5.0) running on a kubernetes cluster.

It´s a springboot application running with java 8.

With the last upgrade to version 2.5.0 I started to see into the logs some NullPointerException that are happening when forwarding a record from a punctuator. 
This is the stacktrace of the exception


{code:java}
Caused by: org.apache.kafka.streams.errors.StreamsException: task [2_2] Abort sending since an error caught with a previous record (timestamp 1603721062667) to topic reply-reminder-push-sender due to java.lang.NullPointerException\tat org.apache.kafka.streams.processor.internals.RecordCollectorImpl.send(RecordCollectorImpl.java:240)\tat org.apache.kafka.streams.processor.internals.RecordCollectorImpl.send(RecordCollectorImpl.java:111)\tat org.apache.kafka.streams.processor.internals.SinkNode.process(SinkNode.java:89)\tat org.apache.kafka.streams.processor.internals.ProcessorContextImpl.forward(ProcessorContextImpl.java:201)\tat org.apache.kafka.streams.processor.internals.ProcessorContextImpl.forward(ProcessorContextImpl.java:180)\tat org.apache.kafka.streams.processor.internals.ProcessorContextImpl.forward(ProcessorContextImpl.java:133)\t... 24 common frames omittedCaused by: java.lang.NullPointerException: null\tat org.apache.kafka.common.record.DefaultRecord.sizeOf(DefaultRecord.java:613)\tat org.apache.kafka.common.record.DefaultRecord.recordSizeUpperBound(DefaultRecord.java:633)\tat org.apache.kafka.common.record.DefaultRecordBatch.estimateBatchSizeUpperBound(DefaultRecordBatch.java:534)\tat org.apache.kafka.common.record.AbstractRecords.estimateSizeInBytesUpperBound(AbstractRecords.java:135)\tat org.apache.kafka.common.record.AbstractRecords.estimateSizeInBytesUpperBound(AbstractRecords.java:125)\tat org.apache.kafka.clients.producer.KafkaProducer.doSend(KafkaProducer.java:914)\tat org.apache.kafka.clients.producer.KafkaProducer.send(KafkaProducer.java:862)\tat org.apache.kafka.streams.processor.internals.RecordCollectorImpl.send(RecordCollectorImpl.java:181)\t... 29 common frames omitted
{code}



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