Kafka 10.0.1 does not delete log files on one partition

["Dvorkin, Eugene (CORP)" <Eu...@ADP.com>]

We have problem with one of partition on _consumer_offset topic. It reached 77G and growing.

77G    __consumer_offsets-49

0        __consumer_offsets-5

Our retention policy set for 100mb but apparently deleting of old data does not happens.
log.retention.bytes=104857600
kafka_log_cleanup_interval_mins: 1

My question is – how to resolve this problem? Why cleanup does not happen?
Can we force cleanup and deletion for this partition? Why this system topic?

 Thanks
Eugene

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