paul8263 opened a new pull request, #5:
URL: https://github.com/apache/flink-connector-kafka/pull/5

   … results in Null Pointer Exception
   
   This PR is the migration from 
[FLINK-25916](https://github.com/apache/flink/pull/20343)
   
   # What is the purpose of the change
   
   Allow 
flink-connectors/flink-connector-kafka/src/main/java/org/apache/flink/streaming/connectors/kafka/table/ReducingUpsertWriter.WrappedContext
 to set timestamp with NULL value in order to avoid NPE.
   
   # Brief change log
   
   - 
flink-connectors/flink-connector-kafka/src/main/java/org/apache/flink/streaming/connectors/kafka/table/ReducingUpsertWriter.java
   - 
flink-connectors/flink-connector-kafka/src/test/java/org/apache/flink/streaming/connectors/kafka/table/ReducingUpsertWriterTest.java
   
   # Verifying this change
   
   This change is already covered by existing tests, such as 
flink-connectors/flink-connector-kafka/src/test/java/org/apache/flink/streaming/connectors/kafka/table/ReducingUpsertWriterTest::testWriteDataWithNullTimestamp().
   
   # 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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