[
https://issues.apache.org/jira/browse/KAFKA-3160?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15120439#comment-15120439
]
Ismael Juma commented on KAFKA-3160:
------------------------------------
[~edenhill], you're working on this, right? You should probably assign the
issue to yourself to avoid duplicated work.
> 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
>
> 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.
--
This message was sent by Atlassian JIRA
(v6.3.4#6332)
