feat(opertor): check if a database is in use before dropping it

[etolbakov]

I hereby agree to the terms of the GreptimeDB CLA.

Refer to a related PR or issue link (optional)

#4029

What's changed and what's your intention?

check if a database/schema is in use before dropping it.

Checklist

• I have written the necessary rustdoc comments.
• I have added the necessary unit tests and integration tests.
• This PR requires documentation updates.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 85.12%. Comparing base (5df3d4e) to head (9e1cd09).

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #4035      +/-   ##
==========================================
- Coverage   85.42%   85.12%   -0.31%     
==========================================
  Files         983      983              
  Lines      170493   170493              
==========================================
- Hits       145652   145139     -513     
- Misses      24841    25354     +513     

[etolbakov]

@killme2008 @waynexia
Could you please take a look when you have free time?

also I'm not sure I understand why "CI / Unstable Fuzz Test (unstable_fuzz_create_table_standalone)" is failing if you could point me out I'll be very grateful 🙏

[WenyXu]

@killme2008 @waynexia Could you please take a look when you have free time?

also I'm not sure I understand why "CI / Unstable Fuzz Test (unstable_fuzz_create_table_standalone)" is failing if you could point me out I'll be very grateful 🙏

The fuzz test will drop in-use database(public). Maybe we can create another database for testing instead of dropping the public directly?

[etolbakov]

Thank you Ruihang! I assume the rest is looks ok?

[WenyXu]

Thank you Ruihang! I assume the rest is looks ok?

LGTM, But @waynexia he is Ruihang🤣

[etolbakov]

ohhhh....sorry Weny!!!!
My eyes played trick on me 😄 I really believed that Ruihang replied 🙈
My bad!

I would try tackling the test in the next couple of days

[killme2008]

LGTM

[killme2008]

@WenyXu There is a fuzz test failure
https://github.com/GreptimeTeam/greptimedb/actions/runs/9223815158/job/25388925971?pr=4035

[waynexia]

Looks good to @waynexia 😋

[etolbakov]

@WenyXu There is a fuzz test failure https://github.com/GreptimeTeam/greptimedb/actions/runs/9223815158/job/25388925971?pr=4035

Many thanks to @WenyXu for fixing the failing test 🙏
Linking the PR for the sake of the context.
#4049