RefreshUserMappingsProtocol (Hadoop 0.20.2+737 API)
Date: 2010-10-11

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## org.apache.hadoop.security
Interface RefreshUserMappingsProtocol

All Superinterfaces:
  VersionedProtocol

All Known Implementing Classes:
  JobTracker

    public interface RefreshUserMappingsProtocol

extends VersionedProtocol

Protocol use

Field Summary
`static long` | `versionID` Version 1: Initial version.

Method Summary
`void` | `refreshSuperUserGroupsConfiguration()` Refresh superuser proxy group list
`void` | `refreshUserToGroupsMappings()` Refresh user to group mappings.

Methods inherited from interface org.apache.hadoop.ipc.VersionedProtocol
`getProtocolVersion`

Field Detail

### versionID

    static final long versionID

  Version 1: Initial version.

  See Also:
    Constant Field Values

Method Detail

### refreshUserToGroupsMappings

    void refreshUserToGroupsMappings()
                                     throws IOException

  Refresh user to group mappings.

  Parameters:
    `conf` -
  Throws:
    `IOException`

### refreshSuperUserGroupsConfiguration

    void refreshSuperUserGroupsConfiguration()
                                             throws IOException

  Refresh superuser proxy group list

  Throws:
    `IOException`

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