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Posted to issues@beam.apache.org by "Dénes Bartha (Jira)" <ji...@apache.org> on 2022/03/07 08:33:00 UTC

[jira] [Commented] (BEAM-10529) Kafka XLang fails for ?empty? key/values

    [ https://issues.apache.org/jira/browse/BEAM-10529?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17502130#comment-17502130 ] 

Dénes Bartha commented on BEAM-10529:
-------------------------------------

Hi, we are experiencing the same issue...

> Kafka XLang fails for ?empty? key/values
> ----------------------------------------
>
>                 Key: BEAM-10529
>                 URL: https://issues.apache.org/jira/browse/BEAM-10529
>             Project: Beam
>          Issue Type: Bug
>          Components: cross-language, io-java-kafka
>            Reporter: Luke Cwik
>            Assignee: John Casey
>            Priority: P1
>          Time Spent: 3h 20m
>  Remaining Estimate: 0h
>
> It looks like the Javadoc for ByteArrayDeserializer and StringDeserializer can return null[1, 2] and we aren't using NullableCoder.of(ByteArrayCoder.of()) in the expansion[3]. Note that KafkaIO does this correctly in its regular coder inference logic[4].
> 1: [https://kafka.apache.org/21/javadoc/org/apache/kafka/common/serialization/ByteArrayDeserializer.html#deserialize-java.lang.String-byte:A-|https://kafka.apache.org/21/javadoc/org/apache/kafka/common/serialization/ByteArrayDeserializer.html#deserialize-java.lang.String-byte:A-2:]
> [2:|https://kafka.apache.org/21/javadoc/org/apache/kafka/common/serialization/ByteArrayDeserializer.html#deserialize-java.lang.String-byte:A-2:]
>  [https://kafka.apache.org/21/javadoc/org/apache/kafka/common/serialization/StringDeserializer.html#deserialize-java.lang.String-byte:A-]
> 3: [https://github.com/apache/beam/blob/af2d6b0379d64b522ecb769d88e9e7e7b8900208/sdks/java/io/kafka/src/main/java/org/apache/beam/sdk/io/kafka/KafkaIO.java#L478]
> 4: [https://github.com/apache/beam/blob/af2d6b0379d64b522ecb769d88e9e7e7b8900208/sdks/java/io/kafka/src/main/java/org/apache/beam/sdk/io/kafka/LocalDeserializerProvider.java#L85]



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