JiangHua Zhu created HDFS-16294:
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             Summary: Remove invalid DataNode#CONFIG_PROPERTY_SIMULATED
                 Key: HDFS-16294
                 URL: https://issues.apache.org/jira/browse/HDFS-16294
             Project: Hadoop HDFS
          Issue Type: Improvement
          Components: datanode
            Reporter: JiangHua Zhu
             Fix For: 2.9.2


As early as when HDFS-2907 was resolved, 
SimulatedFSDataset#CONFIG_PROPERTY_SIMULATED was removed. Replaced by: 
SimulatedFSDataset#Factory and DFSConfigKyes#DFS_DATANODE_FSDATASET_FACTORY_KEY.
However, the introduction to CONFIG_PROPERTY_SIMULATED is still retained in the 
DataNode.


Here are some traces related to HDFS-2907:
https://issues.apache.org/jira/browse/HDFS-2907
https://github.com/apache/hadoop/commit/efbc58f30c8e8d9f26c6a82d32d53716fb2b222a#diff-ab77612831fcb9a35e14c294417f0919c7a30c0cef9a4aec6b32d5f2df957020



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