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https://issues.apache.org/jira/browse/SPARK-26267?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16709169#comment-16709169
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Shixiong Zhu commented on SPARK-26267:
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KAFKA-7703 only exists in Kafka 1.1.0 and above, so a possible workaround is
using an old version that doesn't have this issue. This doesn't impact Spark
2.3.x and below as we use Kafka 0.10.0.1 by default.
> 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: Major
>
> 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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