feat(streaming): remove source limit for concurrent ckpt

[skyzh]

Signed-off-by: Alex Chi iskyzh@gmail.com

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What's changed and what's your intention?

Should be merged after concurrent checkpoint. Remove source limit.

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)

close #3403

[tabVersion]

is the backpressure mechanism not necessary now?

[codecov]

Codecov Report

Merging #3424 (fa1b0e6) into main (84f84dc) will increase coverage by 0.00%.
The diff coverage is n/a.

@@           Coverage Diff           @@
##             main    #3424   +/-   ##
=======================================
  Coverage   73.81%   73.81%           
=======================================
  Files         765      765           
  Lines      105357   105357           
=======================================
+ Hits        77766    77769    +3     
+ Misses      27591    27588    -3     

Flag	Coverage Δ
rust	73.81% <ø> (+<0.01%)	⬆️

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

Impacted Files	Coverage Δ
src/stream/src/executor/source.rs	95.37% <ø> (ø)
src/storage/src/hummock/local_version_manager.rs	84.53% <0.00%> (+0.15%)	⬆️
src/frontend/src/expr/utils.rs	99.24% <0.00%> (+0.25%)	⬆️
src/meta/src/hummock/mock_hummock_meta_client.rs	41.50% <0.00%> (+0.94%)	⬆️

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[skyzh]

is the backpressure mechanism not necessary now?

This is not related to back pressure, IMO.

[hzxa21]

@skyzh #3415 is merged. We can resolve the conflict and merge this PR now.