LlapNodeId getNodeIdForTaskAttempt(TezTaskAttemptID taskAttemptId) {
      return attemptToNodeMap.get(taskAttemptId);
    }
Track the association between known containers and taskAttempts, along with the nodes they are assigned to.
llap-tez/src/java/org/apache/hadoop/hive/llap/tezplugins/LlapTaskCommunicator.java