TezTaskAttemptID represents the immutable and unique identifier for a task attempt. Each task attempt is one particular instance of a Tez Task identified by its TezTaskID. TezTaskAttemptID consists of 2 parts. First part is the {@link TezTaskID}, that this TaskAttemptID belongs to. Second part is the task attempt number.
Applications should never construct or parse TaskAttemptID strings , but rather use appropriate constructors or {@link Class#forName(String)}method.
@see TezTaskID