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https://issues.apache.org/jira/browse/BEAM-10529?focusedWorklogId=738862&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-738862
]
ASF GitHub Bot logged work on BEAM-10529:
-----------------------------------------
Author: ASF GitHub Bot
Created on: 09/Mar/22 15:46
Start Date: 09/Mar/22 15:46
Worklog Time Spent: 10m
Work Description: damccorm commented on a change in pull request #16923:
URL: https://github.com/apache/beam/pull/16923#discussion_r822793905
##########
File path: sdks/go/pkg/beam/core/graph/coder/coder.go
##########
@@ -394,6 +395,19 @@ func NewKV(components []*Coder) *Coder {
}
}
+func NewN(component *Coder) *Coder {
+ checkCoderNotNil(component, "Nullable")
+ return &Coder{
+ Kind: Nullable,
+ T: typex.New(typex.NullableType, component.T),
+ Components: []*Coder{component},
+ }
+}
Review comment:
I think you may need to update
https://github.com/apache/beam/blob/7e896ba429fdad0b54448409cff95bdfd1d03e92/sdks/go/pkg/beam/core/runtime/exec/coder.go#L67
(and `MakeElementDecoder`) as well to correctly plumb this through
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Issue Time Tracking
-------------------
Worklog Id: (was: 738862)
Time Spent: 5h 40m (was: 5.5h)
> 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: 5h 40m
> 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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