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 1. WebHDFS User Guide

The following examples use the curl command tool to access HDFS via WebHDFS REST API.

  • To read a file (for example: /foo/bar):

    curl -i -L "http://$<Host_Name>:$<Port>/webhdfs/v1/foo/bar?op=OPEN"

  • To list a directory (for example: /foo):

    curl -i "http://$<Host_Name>:$<Port>/webhdfs/v1/foo/?op=LISTSTATUS"

  • To list the status of a file (for example: /foo/bar) or a directory:

    curl -i "http://$<Host_Name>:$<Port>/webhdfs/v1/foo/bar?op=GETFILESTATUS"

  • To write a file into a /foo/new file:

    curl -i -X PUT -L "http://$<Host_Name>:$<Port>/webhdfs/v1/foo/newFile?op=CREATE" -T newFile

  • To rename the /foo/bar file to /foo/bar3:

    curl -i -X PUT "http://$<Host_Name>:$<Port>/webhdfs/v1/foo/bar?op=RENAME&destination=/foo/bar2"

  • Make new directory /foo2:

    curl -i -X PUT "http://$<Host_Name>:$<Port>/webhdfs/v1/foo2?op=MKDIRS&permission=711"
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