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https://issues.apache.org/jira/browse/BEAM-6063?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Alexey Romanenko updated BEAM-6063:
-----------------------------------
    Description: 
Currently, the default input collection for {{KafkaIO.Write}} is 
{{PCollection<KV<K, V>>}}. To support writing of Kafka headers or different 
output Kafka topics, we need to change type of input collection to 
{{PCollection<ProducerRecord<K, V>>}}. Also, it will make sense to use 
{{ProducerRecord<K, V>}} instead of {{KV<K ,V>}} internally in {{KafkaIO}} to 
keep all meta information.

In the same time, we need to keep compatibility for old interface based on 
{{KV<K, V>}} but make it deprecated and totally move to  {{ProducerRecord<K, 
V>}} later.

  was:
Currently, the default input collection for KafkaIO.Write is 
{{PCollection<KV<K, V>>}}. To support writing of Kafka headers or different 
output Kafka topics, we need to provide change input collection to  
{{PCollection<KV<K, V>>}}
  

KafkaIO.writeRecords() which is a PCollection<ProducerRecord<K, V>, PDone> 

 

{{KafkaIO.writeRecords()}} which is a {{PCollection<ProducerRecord<K, V>, 
PDone>}}? 


> KafkaIO: add support of ProducerRecord for writing 
> ---------------------------------------------------
>
>                 Key: BEAM-6063
>                 URL: https://issues.apache.org/jira/browse/BEAM-6063
>             Project: Beam
>          Issue Type: Improvement
>          Components: io-java-kafka
>            Reporter: Alexey Romanenko
>            Assignee: Raghu Angadi
>            Priority: Major
>
> Currently, the default input collection for {{KafkaIO.Write}} is 
> {{PCollection<KV<K, V>>}}. To support writing of Kafka headers or different 
> output Kafka topics, we need to change type of input collection to 
> {{PCollection<ProducerRecord<K, V>>}}. Also, it will make sense to use 
> {{ProducerRecord<K, V>}} instead of {{KV<K ,V>}} internally in {{KafkaIO}} to 
> keep all meta information.
> In the same time, we need to keep compatibility for old interface based on 
> {{KV<K, V>}} but make it deprecated and totally move to  {{ProducerRecord<K, 
> V>}} later.



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