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https://issues.apache.org/jira/browse/KAFKA-3160?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Magnus Edenhill reassigned KAFKA-3160:
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Assignee: Magnus Edenhill
> Kafka LZ4 framing code miscalculates header checksum
> ----------------------------------------------------
>
> Key: KAFKA-3160
> URL: https://issues.apache.org/jira/browse/KAFKA-3160
> Project: Kafka
> Issue Type: Bug
> Components: compression
> Affects Versions: 0.8.2.0, 0.8.2.1, 0.9.0.0, 0.8.2.2
> Reporter: Dana Powers
> Assignee: Magnus Edenhill
>
> KAFKA-1493 implements the LZ4 framing specification, but it incorrectly
> calculates the header checksum. Specifically, the current implementation
> includes the 4-byte MagicNumber in the checksum, which is incorrect.
> http://cyan4973.github.io/lz4/lz4_Frame_format.html
> Third-party clients that attempt to use off-the-shelf lz4 framing find that
> brokers reject messages as having a corrupt checksum. So currently non-java
> clients must 'fixup' lz4 packets to deal with the broken checksum.
> Magnus first identified this issue in librdkafka; kafka-python has the same
> problem.
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