// LOG.info("cancelJobTrackerDelegationToken("+tokenStrForm+","+tokenSignature+")");
JobClient jcl = new JobClient(new JobConf(new Configuration(), HCatOutputFormat.class));
Token<org.apache.hadoop.mapreduce.security.token.delegation.DelegationTokenIdentifier> t = extractJobTrackerToken(tokenStrForm,tokenSignature);
// LOG.info("canceling "+t);
try {
jcl.cancelDelegationToken(t);
}catch(Exception e){
// HCatUtil.logToken(LOG, "jcl token to cancel", t);
// ignore if token has already been invalidated.
}
}