Without the -x option (default), the result is always calculated from all INodes, including all snapshots under the given path. The -x option excludes snapshots from the result calculation. The -h option shows sizes in human readable format. The list of possible parameters that can be used in -t option(case insensitive except the parameter ""): "", “all”, “ram_disk”, “ssd”, “disk” or “archive”. The -t option is ignored if -u or -q option is not given. The -t option shows the quota and usage for each storage type. The output columns with -count -u are: QUOTA, REMAINING_QUOTA, SPACE_QUOTA, REMAINING_SPACE_QUOTA, PATHNAME The output columns with -count -q are: QUOTA, REMAINING_QUOTA, SPACE_QUOTA, REMAINING_SPACE_QUOTA, DIR_COUNT, FILE_COUNT, CONTENT_SIZE, PATHNAME q means show quotas, -u limits the output to show quotas and usage only. The -u and -q options control what columns the output contains. The output columns with -count are: DIR_COUNT, FILE_COUNT, CONTENT_SIZE, PATHNAME
Usage: hadoop fs -count ] Ĭount the number of directories, files and bytes under the paths that match the specified file pattern. Additional information is in the Permissions Guide. Usage: hadoop fs -chown ] URI Ĭhange the owner of files. The user must be the owner of the file, or else a super-user. With -R, make the change recursively through the directory structure. Usage: hadoop fs -chmod URI Ĭhange the permissions of files.
The user must be the owner of files, or else a super-user. Usage: hadoop fs -chgrp GROUP URI Ĭhange group association of files. The -v option displays blocks size for the file.Returns the checksum information of a file. hadoop fs -cat file:///file3 /user/hadoop/file4.hadoop fs -cat hdfs:///file1 hdfs:///file2.The -ignoreCrc option disables checkshum verification.hadoop fs -appendToFile - hdfs://nn./hadoop/hadoopfile Reads the input from stdin.hadoop fs -appendToFile localfile hdfs://nn./hadoop/hadoopfile.hadoop fs -appendToFile localfile1 localfile2 /user/hadoop/hadoopfile.hadoop fs -appendToFile localfile /user/hadoop/hadoopfile.Also reads input from stdin and appends to destination file system. appendToFileĪppend single src, or multiple srcs from local file system to the destination file system.
HADOOP COMMAND LINE FIND FILE MANUAL
See the Commands Manual for generic shell options. The HDFS home directory can also be implicitly accessed, e.g., when using the HDFS trash folder, the. For HDFS, the current working directory is the HDFS home directory /user/ that often has to be created manually. If HDFS is being used, hdfs dfs is a synonym. Error information is sent to stderr and the output is sent to stdout.
Differences are described with each of the commands. Most of the commands in FS shell behave like corresponding Unix commands. An HDFS file or directory such as /parent/child can be specified as hdfs://namenodehost/parent/child or simply as /parent/child (given that your configuration is set to point to hdfs://namenodehost). If not specified, the default scheme specified in the configuration is used. For HDFS the scheme is hdfs, and for the Local FS the scheme is file. The URI format is scheme://authority/path. Running Applications in runC ContainersĪll FS shell commands take path URIs as arguments.Running Applications in Docker Containers.
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