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Posted to hdfs-dev@hadoop.apache.org by "James Thomas (JIRA)" <ji...@apache.org> on 2014/08/14 22:40:22 UTC

[jira] [Created] (HDFS-6853) MiniDFSCluster.isClusterUp() should not check if null NameNodes are up

James Thomas created HDFS-6853:
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             Summary: MiniDFSCluster.isClusterUp() should not check if null NameNodes are up
                 Key: HDFS-6853
                 URL: https://issues.apache.org/jira/browse/HDFS-6853
             Project: Hadoop HDFS
          Issue Type: Bug
            Reporter: James Thomas


Suppose we have a two-NN cluster and then shut down one of the NN's (NN0). When we try to restart the other NN (NN1), we wait for isClusterUp() to return true, but this will never happen because NN0 is null and isNameNodeUp returns false for a null NN.



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