Siyao Meng created HDFS-15609:
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             Summary: Implement hdfs getconf -serverDefaults
                 Key: HDFS-15609
                 URL: https://issues.apache.org/jira/browse/HDFS-15609
             Project: Hadoop HDFS
          Issue Type: Improvement
          Components: hdfs-client
    Affects Versions: 3.3.0, 3.4.0
            Reporter: Siyao Meng
            Assignee: Siyao Meng


There doesn't seem to be a way to verify whether a Hadoop/HDFS client correctly 
receives the FsServerDefaults from the NameNode.

Here I propose extending {{hadoop getconf}} command with parameter 
{{-serverDefaults}}. When executed, the client shall get {{FsServerDefaults}} 
from the specified NameNode and print the configuration values out.



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