fs.file.impl org.apache.hadoop.fs.LocalFileSystem The FileSystem for file: uris. fs.hdfs.impl org.apache.hadoop.dfs.DistributedFileSystem The FileSystem for hdfs: uris. fs.s3.impl org.apache.hadoop.fs.s3.S3FileSystem The FileSystem for s3: uris. fs.kfs.impl org.apache.hadoop.fs.kfs.KosmosFileSystem The FileSystem for kfs: uris. fs.hftp.impl org.apache.hadoop.dfs.HftpFileSystem fs.ramfs.impl org.apache.hadoop.fs.InMemoryFileSystem The FileSystem for ramfs: uris.