title: Kafka 1.0 reseting offset doesn't reset all partitions to 0
body: <p>When resetting kafka consumer offsets to earliest, it keeps some partitions with offset > 0</p>
  
  <p><code>$ kafka-consumer-groups.sh --bootstrap-server 127.0.0.1:9092 --group group1 --topic topic1 --reset-offsets --to-earliest --execute</code></p>
  
  <p>Shows:</p>
  
  <pre><code>TOPIC             PARTITION  NEW-OFFSET
  topic1            4          0
  topic1            1          6153734
  topic1            3          0
  topic1            2          0
  topic1            0          0
  </code></pre>
  
  <p>Why is there no 0 for partition 1 as well?</p>