update doc: add jdbc example for data subscribe

TD-1147

TD-1057 not show error if create file failed

 update  influxdbTestWriteLoop.sh

udpate taos sql md

Feature/os

Feature/query

Bugfix/td-1142

Update connector-ch.md

change format

in singe table subscription, after consume all data, the next call to consume crash both client and server.

this commit fix the issue.

try to solve sync problem

inotfiy events

Update connector-ch.md

add notification message before return

Update connector-ch.md

Add taosdemo into daily test