src/main/java/org/opensearch/ad/task/ADBatchTaskRunner.java (3 lines):
	- line 526: // TODO: if task failed due to limit exceed exception in half way, resume from the break point or just clear
	- line 846: // TODO: refactor to make the workflow more clear
	- line 1029: // TODO: Exception may be caused by wrong feature query or some bad data. Differentiate these


src/main/java/org/opensearch/ad/model/AnomalyDetector.java (3 lines):
	- line 64: * TODO: Will replace detector config mapping in AD task with detector config setting directly \
	- line 120: // TODO: support backward compatibility, will remove in future
	- line 685: * TODO: need to deal with the case where customers start with single-entity detector, we set it to 8 by default;


src/main/java/org/opensearch/ad/feature/SearchFeatureDao.java (2 lines):
	- line 366: // TODO: tune timeout for historical analysis based on performance test result
	- line 935: // TODO: FeatureQuery field is planned to be removed and search request creation will migrate to new api.


src/main/java/org/opensearch/ad/rest/AbstractAnomalyDetectorAction.java (2 lines):
	- line 42: // TODO: will add more cluster setting consumer later
	- line 43: // TODO: inject ClusterSettings only if clusterService is only used to get ClusterSettings


src/main/java/org/opensearch/ad/AnomalyDetectorRunner.java (2 lines):
	- line 80: // TODO return exception like IllegalArgumentException to explain data is not enough for preview
	- line 132: // TODO return exception like IllegalArgumentException to explain data is not enough for preview


src/main/java/org/opensearch/ad/transport/handler/AnomalyIndexHandler.java (2 lines):
	- line 113: // TODO: check if user has permission to index.
	- line 177: // TODO: Upgrade custom result index mapping to latest version?


src/main/java/org/opensearch/ad/task/ADTaskManager.java (2 lines):
	- line 1779: // TODO: handle timeout exception
	- line 2790: * //TODO: support resuming failed task


src/main/java/org/opensearch/ad/util/RestHandlerUtils.java (1 line):
	- line 183: * TODO: tune this function for wrapped exception, return root exception error message


src/main/java/org/opensearch/ad/AnomalyDetectorJobRunner.java (1 line):
	- line 313: * TODO: Handle finer granularity exception such as some exception may be


src/main/java/org/opensearch/ad/ml/EntityModel.java (1 line):
	- line 24: // TODO: sample should record timestamp


src/main/java/org/opensearch/ad/rest/RestDeleteAnomalyResultsAction.java (1 line):
	- line 49: * TODO: build better user experience to reduce user's effort to maintain custom result index.


src/main/java/org/opensearch/ad/rest/handler/AbstractAnomalyDetectorActionHandler.java (1 line):
	- line 784: // TODO: move this method to util class so that it can be re-usable for more use cases


src/main/java/org/opensearch/ad/rest/RestExecuteAnomalyDetectorAction.java (1 line):
	- line 51: // TODO: apply timeout config


src/main/java/org/opensearch/ad/settings/LegacyOpenDistroAnomalyDetectorSettings.java (1 line):
	- line 265: // TODO: performance test and tune the setting.


src/main/java/org/opensearch/ad/rest/handler/ValidateAnomalyDetectorActionHandler.java (1 line):
	- line 116: // TODO: add implementation for model config validation


src/main/java/org/opensearch/ad/feature/FeatureManager.java (1 line):
	- line 485: // TODO refactor this common lines so that these code can be run for 1 time for all entities


src/main/java/org/opensearch/ad/constant/CommonName.java (1 line):
	- line 24: // TODO: move other index name here


src/main/java/org/opensearch/ad/caching/PriorityCache.java (1 line):
	- line 712: // TODO: make it work for shingles. samples.size() is not the real shingle


src/main/java/org/opensearch/ad/rest/RestIndexAnomalyDetectorAction.java (1 line):
	- line 77: // TODO: check detection interval < modelTTL


src/main/java/org/opensearch/ad/settings/AnomalyDetectorSettings.java (1 line):
	- line 380: // TODO: performance test and tune the setting.