feat(meta): support idle exit

[breezewish]

Signed-off-by: Wish breezewish@outlook.com

I hereby agree to the terms of the Singularity Data, Inc. Contributor License Agreement.

What's changed and what's your intention?

This PR adds dangerous_max_idle_secs to the meta server args. When specified, meta server will be exited after specified idle duration (idle is defined as no mview creation, deletion or flush). This can be useful for the local playground or online playground.

The single-node playground will be also exited in this case, bringing other service down. Playground opt max-idle-secs-to-exit in risedev.yml will be passed to the meta server.

Note: multi-node playground currently does not fully exit at idle, as other service are still keep retrying.

To try with locally:

  playground:
    - use: meta-node
      enable-dashboard-v2: false
      unsafe-disable-recovery: true
      max-idle-secs-to-exit: 10   # <-- Specify idle exit duration
    - use: compute-node
    - use: frontend

Checklist

• I have written necessary docs and comments
• I have added necessary unit tests and integration tests
• All checks passed in ./risedev check (or alias, ./risedev c)

Refer to a related PR or issue link (optional)

[CLAassistant]

All committers have signed the CLA.

[skyzh]

LGTM

[codecov]

Codecov Report

Merging #3444 (d3eee3e) into main (68be229) will decrease coverage by 0.04%.
The diff coverage is 33.12%.

@@            Coverage Diff             @@
##             main    #3444      +/-   ##
==========================================
- Coverage   73.77%   73.73%   -0.05%     
==========================================
  Files         766      767       +1     
  Lines      105550   105683     +133     
==========================================
+ Hits        77874    77925      +51     
- Misses      27676    27758      +82     

Flag	Coverage Δ
rust	73.73% <33.12%> (-0.05%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
src/cmd_all/src/playground.rs	0.00% <0.00%> (ø)
src/meta/src/barrier/mod.rs	81.19% <0.00%> (ø)
src/meta/src/cluster/mod.rs	59.58% <0.00%> (ø)
src/meta/src/lib.rs	1.20% <0.00%> (-0.10%)	⬇️
src/meta/src/rpc/server.rs	0.00% <0.00%> (ø)
src/meta/src/rpc/service/ddl_service.rs	0.00% <0.00%> (ø)
src/meta/src/rpc/service/stream_service.rs	0.00% <0.00%> (ø)
src/risedevtool/src/service_config.rs	0.00% <ø> (ø)
src/risedevtool/src/task/meta_node_service.rs	0.00% <0.00%> (ø)
src/rpc_client/src/meta_client.rs	0.00% <0.00%> (ø)
... and 5 more

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