src/search/indexer.cc (3 lines):
	- line 119: // TODO: care about endian later
	- line 120: // TODO: currently only support 64bit floating point
	- line 290: // TODO: we can remove the lock if we solve the race problem


src/commands/cmd_key.cc (3 lines):
	- line 458: /* TODO:
	- line 469: /* TODO:
	- line 512: * TODO: support CLIENT_SCRIPT flag, (!storekey_.empty() || c->flags & CLIENT_SCRIPT)) */


src/types/redis_bloom_chain.cc (2 lines):
	- line 187: // TODO: to test which direction for searching is better
	- line 279: // TODO: to test which direction for searching is better


src/search/redis_query_transformer.h (2 lines):
	- line 48: // TODO: improve parse error message, with source location
	- line 164: // TODO: allow hybrid query


src/commands/cmd_cluster.cc (2 lines):
	- line 112: // TODO: support multiple slot ranges
	- line 282: // TODO: support multiple slot ranges


src/storage/storage.h (1 line):
	- line 438: /// TODO: Change it to defer getting the context, and the snapshot is pinned after the first read operation


src/storage/batch_extractor.cc (1 line):
	- line 264: // TODO: to implement the case of kRedisBloomFilter


src/search/passes/cost_model.h (1 line):
	- line 32: // TODO: collect statistical information of index in runtime


src/cluster/slot_migrate.cc (1 line):
	- line 80: // TODO: concurrent migration, multiple migration jobs


src/search/sql_transformer.h (1 line):
	- line 53: // TODO: improve parse error message, with source location


src/types/redis_hash.cc (1 line):
	- line 404: // TODO: Getting all values in Hash might be heavy, consider lazy-loading these values later


src/search/ir_sema_checker.h (1 line):
	- line 57: // TODO: allow hybrid query


src/storage/redis_db.h (1 line):
	- line 37: /// TODO: Expect to expand or eliminate SORT_LENGTH_LIMIT


src/types/redis_list.cc (1 line):
	- line 129: // FIXME: should be always exists??


src/search/passes/index_selection.h (1 line):
	- line 99: // TODO: optimize plan with sorting order via the cost model


src/search/passes/sort_limit_to_knn.h (1 line):
	- line 37: // TODO: allow hybrid query


src/storage/compact_filter.h (1 line):
	- line 134: // TODO: just a dummy one here


src/storage/scripting.cc (1 line):
	- line 726: // TODO: we do not want to repeat same logic as Connection::ExecuteCommands,


src/types/redis_tdigest.cc (1 line):
	- line 49: // TODO: It should be replaced by a iteration of the rocksdb iterator