fix(query): fix error in seq fetch data block.

refactor(sync): add timestamp trace log when elect and heartbeat

test: add asan case

test: adjust asan case

fix(shell): add help command and fix create table filed complete

refactor: enable continue query when the buffer of sink node is empty

fix:initialize maxts

test：add test case for TS-1939

Revert "Revert "enh: row optimize2""

Revert "enh: row optimize2"

fix(sync): use local timestamp

fix: build data from mem/imem first when large nchar column incur …eBlockShouldLoad since SDataBlockToLoadInfo.moreThanCapacity

test: add asan case

fix: [ASAN] heap buffer overflow in sclfunc.c

fix(stream): memory leak

test: reopen test case

Test/td 20592 1

fix: [ASAN] fix null pointer in tdatablock.c