test: case for valgrind

fix: santizer error in sim

fea: add null tag support in schemaless

fix: memory error

refactor: add assert in hash table.

fix(sync): syncRespMgrGetAndDel

 refactor: free rpcCont on error occured

fix: memory error

fix: some prblems of parser and planner

fix(stream): avoid check data update for tmq

refactor: adjust error codes

fix(query): set the correct schema version for rows in buffer.