TAO XIAO created KAFKA-2993:
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Summary: compression-rate-avg always returns 0 event with
compression.type being set
Key: KAFKA-2993
URL: https://issues.apache.org/jira/browse/KAFKA-2993
Project: Kafka
Issue Type: Bug
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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