Jason Gustafson created KAFKA-4108:
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             Summary: Improve DumpLogSegments offsets-decoder output format
                 Key: KAFKA-4108
                 URL: https://issues.apache.org/jira/browse/KAFKA-4108
             Project: Kafka
          Issue Type: Improvement
          Components: tools
            Reporter: Jason Gustafson


When using the DumpLogSegments with the "--offsets-decoder" option (for 
consuming __consumer_offsets), the encoding of group metadata makes it a little 
difficult to identify individual fields. In particular, we use the following 
formatted string for group metadata: 
{code}
${protocolType}:${groupMetadata.protocol}:${groupMetadata.generationId}:${assignment}
{code}
Keys have a similar formatting. Most users are probably not going to know which 
field is which based only on the output, so it would be helpful to include 
field names. Maybe we could just output a JSON object?



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