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https://issues.apache.org/jira/browse/NIFI-13487?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Zsihovszki Krisztina reassigned NIFI-13487:
-------------------------------------------

    Assignee: Zsihovszki Krisztina

> ConsumeKinesisStream processor does not consume records inserted before its 
> start
> ---------------------------------------------------------------------------------
>
>                 Key: NIFI-13487
>                 URL: https://issues.apache.org/jira/browse/NIFI-13487
>             Project: Apache NiFi
>          Issue Type: Bug
>    Affects Versions: 2.0.0-M4
>            Reporter: Zsihovszki Krisztina
>            Assignee: Zsihovszki Krisztina
>            Priority: Major
>
> Noticed a changed behaviour for ConsumeKinesisStream processor when 
> "Initial Stream Position" is set to "TRIM_HORIZON".
> ConsumeKinesisStream consumes only records which were inserted to Kinesis 
> stream after the processor start and it does not consume the records which 
> were insterted before processor start.
> In case of "TRIM_HORIZON" the records inserted before processor start (app 
> registration) should be consumed as well.
>  
> The processor behaved as it used "LATEST" initial stream position.
> The issue occurs for NiFi 2.0 only and the root cause seems to be related to  
> NIFI-8531: Upgrading Kinesis processors to AWS SDK 2.x
>  
> According to 
> [https://docs.aws.amazon.com/streams/latest/dev/kcl-migration.html,] setting 
> initialPositionInStreamExtended was moved from LeaseManagementConfig to 
> RetrievalConfig.
> The [existing 
> implementation|https://github.com/apache/nifi/blob/main/nifi-extension-bundles/nifi-aws-bundle/nifi-aws-processors/src/main/java/org/apache/nifi/processors/aws/kinesis/stream/ConsumeKinesisStream.java]
>  sets the value still in LeaseManagementConfig, this is the reason why the 
> default value, "LATEST" was used as initial position.



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