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https://issues.apache.org/jira/browse/KAFKA-10504?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17199715#comment-17199715
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Boyang Chen commented on KAFKA-10504:
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Is this optimization necessary?
> It will not work to skip to InitProducerId as lastError is always null
> ----------------------------------------------------------------------
>
> Key: KAFKA-10504
> URL: https://issues.apache.org/jira/browse/KAFKA-10504
> Project: Kafka
> Issue Type: Improvement
> Components: clients
> Reporter: HaiyuanZhao
> Assignee: HaiyuanZhao
> Priority: Major
> Original Estimate: 12h
> Remaining Estimate: 12h
>
> Kafka-8805 introduced an optimization for txn abort process: If the last
> error is an INVALID_PRODUCER_ID_MAPPING error, skip directly to InitProduceId.
> However this optimization will not work as the var lastError is always null.
> Because the txn state will transit to ABORTING_TRANSACTION from
> ABORTABLE_ERROR when beginAbort is called, and the lastError will updated to
> null.
> So then EndTxn is always called before InitProduceId.
>
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