Description
When using dfs.include/dfs.exclude files for HDFS and yarn.include/yarn.exclude for YARN, we need to ensure these files are updated whenever a host is added or removed, and we should also make sure su -l hdfs -c "hdfs dfsadmin -refreshNodes" for HDFS and su -l yarn -c "yarn rmadmin -refreshNodes" for YARN is run after the host has been added and the corresponding HDFS/YARN files are updated.
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