dubbo-serialization-extensions/dubbo-serialization-kryo/src/main/java/org/apache/dubbo/common/serialize/kryo/KryoObjectInput.java (3 lines):
	- line 134: // TODO optimization
	- line 146: // TODO optimization
	- line 153: // TODO optimization


dubbo-remoting-extensions/dubbo-remoting-p2p/src/main/java/org/apache/dubbo/remoting/p2p/exchange/support/AbstractExchangeGroup.java (2 lines):
	- line 93: if (server == null) { // TODO exist concurrent gap
	- line 114: if (client == null) { // TODO exist concurrent gap


dubbo-remoting-extensions/dubbo-remoting-p2p/src/main/java/org/apache/dubbo/remoting/p2p/support/AbstractGroup.java (2 lines):
	- line 84: if (server == null) { // TODO exist concurrent gap
	- line 105: if (client == null) { // TODO exist concurrent gap


dubbo-metadata-report-extensions/dubbo-metadata-report-consul/src/main/java/org/apache/dubbo/metadata/store/consul/ConsulMetadataReport.java (1 line):
	- line 117: //FIXME CHECK


dubbo-serialization-extensions/dubbo-serialization-kryo/src/main/java/org/apache/dubbo/common/serialize/kryo/KryoObjectOutput.java (1 line):
	- line 104: // TODO carries class info every time.


dubbo-serialization-extensions/dubbo-serialization-kryo/src/main/java/org/apache/dubbo/common/serialize/kryo/KryoSerialization.java (1 line):
	- line 31: * TODO for now kryo serialization doesn't deny classes that don't implement the serializable interface


dubbo-registry-extensions/dubbo-registry-redis/src/main/java/org/apache/dubbo/registry/redis/RedisRegistry.java (1 line):
	- line 394: } catch (Throwable t) { // TODO Notification failure does not restore mechanism guarantee


dubbo-serialization-extensions/dubbo-serialization-kryo/src/main/java/org/apache/dubbo/common/serialize/kryo/optimized/KryoSerialization2.java (1 line):
	- line 30: * TODO for now kryo serialization doesn't deny classes that don't implement the serializable interface


dubbo-serialization-extensions/dubbo-serialization-kryo/src/main/java/org/apache/dubbo/common/serialize/kryo/utils/AbstractKryoFactory.java (1 line):
	- line 110: // TODO optimization