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Posted to dev@kafka.apache.org by "Neha Narkhede (JIRA)" <ji...@apache.org> on 2015/01/15 00:13:34 UTC

[jira] [Created] (KAFKA-1864) Revisit defaults for the internal offsets topic

Neha Narkhede created KAFKA-1864:
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             Summary: Revisit defaults for the internal offsets topic
                 Key: KAFKA-1864
                 URL: https://issues.apache.org/jira/browse/KAFKA-1864
             Project: Kafka
          Issue Type: Bug
    Affects Versions: 0.8.2
            Reporter: Neha Narkhede
            Priority: Blocker


Realize this is late, but as I was reviewing the 0.8.2 RC, I found that our defaults for the offsets topic are not ideal. The # of partitions currently default to 1 and the replication factor is 1 as well. Granted that the replication factor is changeable in the future (through the admin tool), changing the # of partitions is a very disruptive change. The concern is that this feature is on by default on the server and will be activated the moment the first client turns on kafka based offset storage. 

My proposal is to change the # of partitions to something large (50 or so) and change the replication factor to min(# of alive brokers, configured replication factor)



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