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https://issues.apache.org/jira/browse/BEAM-2185?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16013319#comment-16013319
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Jean-Baptiste Onofré commented on BEAM-2185:
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As a first step, we can imagine to support {{withMaxTime()}} and
{{withMaxRecords()}} as we do on most of the others unbounded IOs. WDYT ?
> KafkaIO bounded source
> ----------------------
>
> Key: BEAM-2185
> URL: https://issues.apache.org/jira/browse/BEAM-2185
> Project: Beam
> Issue Type: New Feature
> Components: sdk-java-extensions
> Reporter: Raghu Angadi
>
> KafkaIO could be a useful source for batch applications as well. It could
> implement a bounded source. The primary question is how the bounds are
> specified.
> One option : Source specifies a time period (say 9am-10am), and KafkaIO
> fetches appropriate start and end offsets based on time-index in Kafka. This
> would suite many batch applications that are launched on a scheduled.
> Another option is to always read till the end and commit the offsets to
> Kafka. Handling failures and multiple runs of a task might be complicated.
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