tree 93651f2145470e02a23885028b4cba7fde4b7c31
parent e6c23d53f6ee3922d9e28167decacb1189184b3d
author Sergiy Matusevych <motus@apache.org> 1491360410 -0700
committer Julia Wang <juliaw@apache.org> 1492465984 -0700

[REEF-1776] Create YARN proxy user to register REEF Driver in Unmanaged AM mode

Summary of changes:
   * Create `YarnProxyUser` class to encapsulate the credentials copying and execution in the proxy context
   * Implement generic API for such user as `UserCredentials` interface to minimize the exposure at the REEF client API side
   * Add `YarnProxyUser` implementation to proper configuration modules
   * Pass `UserCredentials` from REEF into the Driver context in `ReefOnReefDriver`
   * Minor refactoring and logging improvements

JIRA:
  [REEF-1776](https://issues.apache.org/jira/browse/REEF-1776)

Pull request:
  That closes #1290