[jira] [Commented] (KAFKA-3646) Console producer using new producer should set timestamp

["Michael Noll (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/KAFKA-3646?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15266129#comment-15266129 ] 

Michael Noll commented on KAFKA-3646:
-------------------------------------

We should also think about whether a negative timestamp (-1) could cause any downstream collateral damage in Kafka Streams.

AFAIK we do not yet enforce positive (>=0 or >0) timestamps as such, but for e.g. UnlimitedWindows we already do enforce that windows may not be configured with a negative start timestamp (cf. "startOn"):
https://github.com/apache/kafka/blob/trunk/streams/src/main/java/org/apache/kafka/streams/kstream/UnlimitedWindows.java#L38-L40

> Console producer using new producer should set timestamp
> --------------------------------------------------------
>
>                 Key: KAFKA-3646
>                 URL: https://issues.apache.org/jira/browse/KAFKA-3646
>             Project: Kafka
>          Issue Type: Bug
>            Reporter: Guozhang Wang
>            Assignee: Guozhang Wang
>             Fix For: 0.10.0.0
>
>
> {{kafka.tools.ConsoleProducer}}'s default usage of the new producer does not explicitly set the timestamp, and hence for default timestamp type settings (CreationTime) the returned timestamp from broker would be set to -1.
> We need to consider whether or not it makes sense to set the timestamp in console producer.



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