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https://issues.apache.org/jira/browse/KAFKA-2993?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15104023#comment-15104023
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ASF GitHub Bot commented on KAFKA-2993:
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Github user asfgit closed the pull request at:
https://github.com/apache/kafka/pull/784
> compression-rate-avg always returns 0 even with compression.type being set
> --------------------------------------------------------------------------
>
> Key: KAFKA-2993
> URL: https://issues.apache.org/jira/browse/KAFKA-2993
> Project: Kafka
> Issue Type: Bug
> Components: producer
> Affects Versions: 0.9.0.0
> Reporter: TAO XIAO
> Assignee: TAO XIAO
> Priority: Minor
>
> The producer metric compression-rate-avg always returns 0 even with
> compression.type set to snappy. I drilled down the code and discovered that
> the position of bytebuffer in org.apache.kafka.common.record.Compressor is
> reset to 0 by RecordAccumulator.drain() before calling metric updates in
> sender thread.
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