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https://issues.apache.org/jira/browse/KAFKA-20003?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=18045963#comment-18045963
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Chia-Ping Tsai commented on KAFKA-20003:
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There is another issue related to buffer release (KAFKA-19123). Perhaps we can
fix them together in that patch
> Buffer released too early in MemoryPool
> ---------------------------------------
>
> Key: KAFKA-20003
> URL: https://issues.apache.org/jira/browse/KAFKA-20003
> Project: Kafka
> Issue Type: Bug
> Components: core
> Affects Versions: 2.7.2, 2.8.2, 3.0.2, 3.1.2, 3.2.3, 3.3.0, 3.3.2, 3.4.1,
> 3.5.2, 3.6.2, 3.7.2, 3.8.1, 3.9.1, 4.0.1, 4.1.1
> Reporter: Jun Rao
> Priority: Blocker
> Fix For: 4.2.0
>
>
> https://issues.apache.org/jira/browse/KAFKA-10386 we introduced
> Type.COMPACT_RECORDS in SchemaGenerator. However, we forgot to add
> Type.COMPACT_RECORDS to ApiKeys.retainsBufferReference(). This can cause the
> buffer in MemoryPool to be released too early, leading the data corruption
> and potential other weird problems.
>
> This issue is already fixed via
> https://issues.apache.org/jira/browse/KAFKA-19634, but the changes are large.
> We probably should just fix the issue in ApiKeys.retainsBufferReference() in
> 4.2.0 and earlier versions.
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