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Posted to issues@spark.apache.org by "Shixiong Zhu (JIRA)" <ji...@apache.org> on 2018/12/07 17:56:00 UTC

[jira] [Updated] (SPARK-26267) Kafka source may reprocess data

     [ https://issues.apache.org/jira/browse/SPARK-26267?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Shixiong Zhu updated SPARK-26267:
---------------------------------
    Priority: Blocker  (was: Major)

> Kafka source may reprocess data
> -------------------------------
>
>                 Key: SPARK-26267
>                 URL: https://issues.apache.org/jira/browse/SPARK-26267
>             Project: Spark
>          Issue Type: Bug
>          Components: Structured Streaming
>    Affects Versions: 2.4.0
>            Reporter: Shixiong Zhu
>            Priority: Blocker
>              Labels: correctness
>
> Due to KAFKA-7703, when the Kafka source tries to get the latest offset, it may get an earliest offset, and then it will reprocess messages that have been processed when it gets the correct latest offset in the next batch.
> This usually happens when restarting a streaming query.



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