hugegraph-loader/src/main/java/org/apache/hugegraph/loader/util/DataTypeUtil.java (3 lines):
	- line 86: // TODO: Seems a bit violent
	- line 153: // TODO: could extract some steps to a method
	- line 214: * TODO: After parsing to json, the order of the collection changed


hugegraph-loader/src/main/java/org/apache/hugegraph/loader/reader/jdbc/JDBCUtil.java (2 lines):
	- line 93: // TODO: check it
	- line 98: // TODO: check it


hugegraph-hubble/hubble-be/src/main/java/org/apache/hugegraph/service/graph/GraphService.java (2 lines):
	- line 85: // TODO: client should add updateVertex() method
	- line 119: // TODO: client should add updateEdge()


hugegraph-client/src/main/java/org/apache/hugegraph/serializer/direct/RocksDBSerializer.java (2 lines):
	- line 21: * TODO: review later
	- line 29: //  TODO: Support write RocksDB directly


hugegraph-spark-connector/src/main/java/org/apache/hugegraph/spark/connector/utils/HGUtils.java (2 lines):
	- line 43: // TODO mappingFields, mappingValues, nullValues, updateStrategies
	- line 60: // TODO mappingFields, mappingValues, nullValues, updateStrategies


hugegraph-loader/src/main/java/org/apache/hugegraph/loader/HugeGraphLoader.java (2 lines):
	- line 225: * TODO: Separate classes: ReadHandler -> ParseHandler -> InsertHandler
	- line 367: * TODO: How to distinguish load task finished normally or abnormally


hugegraph-client/src/main/java/org/apache/hugegraph/driver/HugeClient.java (2 lines):
	- line 96: // TODO: catch some exception(like IO/Network related) rather than throw Throwable
	- line 158: // TODO: find a way to keep the range of api version correct automatically


hugegraph-client/src/main/java/org/apache/hugegraph/serializer/direct/reuse/BytesDemo.java (2 lines):
	- line 145: * TODO: use a batch and send them together
	- line 187: // TODO: put to HBase


hugegraph-hubble/hubble-be/src/main/java/org/apache/hugegraph/util/HugeClientUtil.java (1 line):
	- line 66: // TODO: change it to connTimeout & readTimeout


hugegraph-loader/src/main/java/org/apache/hugegraph/loader/reader/hdfs/HDFSFileReader.java (1 line):
	- line 73: // TODO: support multiple prefix in uri?


hugegraph-loader/src/main/java/org/apache/hugegraph/loader/reader/jdbc/JDBCReader.java (1 line):
	- line 71: // TODO: save offset


hugegraph-client/src/main/java/org/apache/hugegraph/serializer/direct/HBaseSerializer.java (1 line):
	- line 34: * TODO: review later


hugegraph-client/src/main/java/org/apache/hugegraph/driver/CypherManager.java (1 line):
	- line 51: // TODO: Can add some checks later


hugegraph-hubble/hubble-be/src/main/java/org/apache/hugegraph/config/TomcatServletConfig.java (1 line):
	- line 32: // TODO: remove this class if we don't need it anymore


hugegraph-hubble/hubble-be/src/main/java/org/apache/hugegraph/service/query/GremlinQueryService.java (1 line):
	- line 353: // TODO: reduce the number of requests


hugegraph-hubble/hubble-be/src/main/java/org/apache/hugegraph/service/load/LoadTaskService.java (1 line):
	- line 472: // TODO: Update strategies


hugegraph-client/src/main/java/org/apache/hugegraph/structure/gremlin/ResultSet.java (1 line):
	- line 98: * TODO: Still need to constantly add and optimize


hugegraph-hubble/hubble-be/src/main/java/org/apache/hugegraph/controller/AboutController.java (1 line):
	- line 33: // TODO: delete the class or keep it?


hugegraph-client/src/main/java/org/apache/hugegraph/driver/GremlinManager.java (1 line):
	- line 60: // TODO: Can add some checks later


hugegraph-client/src/main/java/org/apache/hugegraph/serializer/direct/util/SplicingIdGenerator.java (1 line):
	- line 65: //        // TODO: use binary Id with binary fields instead of string id


hugegraph-hubble/hubble-be/src/main/java/org/apache/hugegraph/controller/load/FileMappingController.java (1 line):
	- line 262: * TODO: All file mapping share one load paramter now, should be separated


hugegraph-hubble/hubble-be/src/main/java/org/apache/hugegraph/handler/CustomApplicationRunner.java (1 line):
	- line 33: // TODO: Why we need this class?


hugegraph-hubble/hubble-be/src/main/java/org/apache/hugegraph/service/schema/VertexLabelService.java (1 line):
	- line 396: * TODO: use builder or setter, now use builder throw exception


hugegraph-client/src/main/java/org/apache/hugegraph/serializer/direct/util/IdGenerator.java (1 line):
	- line 217: // TODO: encode with base64