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https://issues.apache.org/jira/browse/KAFKA-4556?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Savdeep Singh updated KAFKA-4556:
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Attachment: stream topology.png
Stream topology example
> unordered messages when multiple topics are combined in single topic through
> stream
> -----------------------------------------------------------------------------------
>
> Key: KAFKA-4556
> URL: https://issues.apache.org/jira/browse/KAFKA-4556
> Project: Kafka
> Issue Type: Bug
> Components: consumer, producer , streams
> Affects Versions: 0.10.0.1
> Reporter: Savdeep Singh
> Attachments: stream topology.png
>
>
> When binding builder with multiple topics, single resultant topic has
> unordered set of messages.
> This issue is at millisecond level. When messages with same milisecond level
> are added in topics.
> Scenario : (1 producer : p1 , 2 topics t1 and t2, streams pick form these 2
> topics and save in resulting t3 topic, 4 partitions of t3 and 4 consumers of
> 4 partitions )
> Case: When p1 adds messages with same millisecond timestamp into t1 and t2 .
> Stream combine and form t3. When this t3 is consumed by consumer, it has
> different order of same millisecond messages.
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