marwei

## how_to_inspect_kafka_log_metadata.md

      
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                marwei
                / how_to_inspect_kafka_log_metadata.md
            
            
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              December 6, 2017 19:57
            
              
                How to Inspect Kafka Log to Get Message's Metadata
              
          
    <PATH_TO_KAFKA>/bin/kafka-run-class kafka.tools.DumpLogSegments --files /tmp/kafka-logs/<TOPIC>00000000000000000000.log --print-data-log

  
## how_to_reset_kafka_consumer_group_offset.md

      
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                marwei
                / how_to_reset_kafka_consumer_group_offset.md
            
            
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              November 9, 2017 23:39
            
              
                How to Reset Kafka Consumer Group Offset
              
          
    Kafka 0.11.0.0 (Confluent 3.3.0) added support to manipulate offsets for a consumer group via cli kafka-consumer-groups command.

List the topics to which the group is subscribed

kafka-consumer-groups --bootstrap-server <kafkahost:port> --group <group_id> --describe
Note the values under "CURRENT-OFFSET" and "LOG-END-OFFSET". "CURRENT-OFFSET" is the offset where this consumer group is currently at in each of the partitions.

Reset the consumer offset for a topic (preview)