Hadoop webhdfs: https://hadoop.apache.org/docs/r2.8.0/hadoop-project-dist/hadoop-hdfs/WebHDFS.html
Azure webhdfs: https://docs.microsoft.com/en-us/azure/data-lake-store/data-lake-store-overview
https://docs.microsoft.com/en-us/rest/api/datalakestore/webhdfs-filesystem-apis
Please refer to the above link for full details, but broadly Azure Data Lake Store currently supports WebHDFS version 2.7.2.
Thanks.