easy_rec/python/compat/sok_optimizer.py (3 lines):
	- line 113: # TODO: the following routine does not work with DynamicVariable
	- line 223: # TODO: Check multi-thread safety of DET
	- line 365: # TODO: Check multi-thread safety of DET


pai_jobs/run.py (1 line):
	- line 395: # TODO: support multi-worker evaluation


easy_rec/python/compat/dynamic_variable.py (1 line):
	- line 196: # TODO: Add is_initialized_op


easy_rec/python/ops/gen_kafka_ops.py (1 line):
	- line 133: r"""TODO: add doc.