Package org.apache.hadoop.tools

Interface GetUserMappingsProtocol

All Known Implementing Classes:
GetUserMappingsProtocolClientSideTranslatorPB
@LimitedPrivate({"HDFS","MapReduce"}) @Evolving public interface GetUserMappingsProtocol
Protocol implemented by the Name Node and Job Tracker which maps users to groups.

  • Field Summary

    Fields
    Modifier and Type
    Field
    Description
    static final long
    versionID
    Version 1: Initial version.

  • Method Summary

    Modifier and Type
    Method
    Description
    String[]
    getGroupsForUser(String user)
    Get the groups which are mapped to the given user.

  • Field Details

  • Method Details

    • getGroupsForUser

      String[] getGroupsForUser(String user) throws IOException
      Get the groups which are mapped to the given user.
      Parameters:
      user - The user to get the groups for.
      Returns:
      The set of groups the user belongs to.
      Throws:
      IOException - raised on errors performing I/O.