if (UserGroupInformation.isSecurityEnabled() && (hsProxy != null)) {
/*
* note that get delegation token was called. Again this is hack for oozie
* to make sure we add history server delegation tokens to the credentials
*/
RMTokenSelector tokenSelector = new RMTokenSelector();
Text service = SecurityUtil.buildTokenService(resMgrDelegate
.getConnectAddress());
if (tokenSelector.selectToken(service, ts.getAllTokens()) != null) {
Text hsService = SecurityUtil.buildTokenService(hsProxy
.getConnectAddress());
if (ts.getToken(hsService) == null) {
ts.addToken(hsService, getDelegationTokenFromHS(hsProxy));
}