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https://issues.apache.org/jira/browse/BEAM-52?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15264971#comment-15264971
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Raghu Angadi commented on BEAM-52:
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> Kafka producer uses the key for selecting a partition.
correction : the default partitioner in Kafka actually uses serialized bytes to
pick a partition, but Partitioner interface includes both key and value
objects, so some custom partitioners might use the key.
> KafkaIO - bounded/unbounded, source/sink
> ----------------------------------------
>
> Key: BEAM-52
> URL: https://issues.apache.org/jira/browse/BEAM-52
> Project: Beam
> Issue Type: New Feature
> Components: sdk-java-extensions
> Reporter: Daniel Halperin
> Assignee: Raghu Angadi
>
> We should support Apache Kafka. The priority list is probably:
> * UnboundedSource
> * unbounded Sink
> * BoundedSource
> * bounded Sink
> The connector should be well-tested, especially around UnboundedSource
> checkpointing and resuming, and data duplication.
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