WebHDFS

lastmod 2024-07-23created 2024-07-232 edits

Hadoop WebHDFS has been available since Hadoop version 1.0.0. Previously, the Hadoop Distributed File System could only be accessed with a Hadoop client or SDK, but since version 1.0.0 an HTTP Rest API is provided, so files on the Hadoop Distributed File System can be processed even without a Hadoop client or SDK.

Methods

The functions of Hadoop WebHDFS are broadly divided into four groups by HTTP method.

• HTTP GET
  • OPEN
  • GETFILESTATUS
  • LISTSTATUS
  • GETCONTENTSUMMARY
  • GETFILECHECKSUM
  • GETHOMEDIRECTORY
  • GETDELEGATIONTOKEN
• HTTP PUT
  • CREATE
  • MKDIRS
  • RENAME
  • SETREPLICATION
  • SETOWNER
  • SETPERMISSION
  • SETTIMES
  • RENEWDELIGATIONTOKEN
  • CANCELDELIGATIONTOKEN
• HTTP POST
  • APPEND
• HTTP DELETE
  • DELETE

See also

• HDFS

Favorite site

• Hadoop WebHDFS Service – DATA ON-AIR