HDFS-17853. Support to make dfs.namenode.fs-limits.max-directory-items reconfigurable #8064
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Sometimes, certain directories—such as temporary library directories—contain too many subdirectories and files, exceeding the limit defined by the dfs.namenode.fs-limits.max-directory-items configuration. This causes many jobs to fail.
To quickly restore job execution, we need to temporarily adjust this configuration. However, since it currently requires to restart NameNode to take effect, we need to make it dynamically reconfigurable without restarting the NameNode.