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Posted to commits@beam.apache.org by "Davor Bonaci (JIRA)" <ji...@apache.org> on 2017/05/05 21:12:04 UTC

[jira] [Assigned] (BEAM-2185) KafkaIO bounded source

     [ https://issues.apache.org/jira/browse/BEAM-2185?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Davor Bonaci reassigned BEAM-2185:
----------------------------------

    Assignee:     (was: Davor Bonaci)

> 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 fetch appropriate start and end offsets based on time-index in Kafka. This would suite many batch applications that are lauched 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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