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Posted to dev@ambari.apache.org by "sam liu (JIRA)" <ji...@apache.org> on 2015/04/22 03:45:58 UTC

[jira] [Created] (AMBARI-10645) Adjust block replication for clusters with less than 3 DataNodes

sam liu created AMBARI-10645:
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             Summary: Adjust block replication for clusters with less than 3 DataNodes
                 Key: AMBARI-10645
                 URL: https://issues.apache.org/jira/browse/AMBARI-10645
             Project: Ambari
          Issue Type: Improvement
          Components: ambari-server
    Affects Versions: 2.2.0
            Reporter: sam liu


When we install on a cluster with less than 3 DataNodes, the replication factor is set to 3 anyway. It does not make sense. We should change this value to a lower number  to avoid missing replicas(for example, if there is just one DN, set the replication factor to 1).



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