enh: opt sys idx perf

fix(sync): fix coverity scan issues

fix(all): improve coverage rate

* chore(release): make get_os.sh works on mac

* chore(tools): update taos-tools

* chore: update taos-tools for 3.0

test: modify timeout for tmq poll

fix: wrong permissions of 'show variables' command

enh: remove obsolete codes for raw data row

fix: coverity issues

test: add keep expired cases

fix(all): fixed coverity scan problems for second submiting

enh: insert parser refactor

This reverts commit c2bff983.

This reverts commit caa88bc5.

This reverts commit aa4daf17.

avoid invalid read/write

fix(sync): add error log when pState is NULL

refactor: reduce the buffered blocks in sink node.

fix(query): refactor and fix some coverity issues.

CID: 400109

CID: 399989

CID: 399845