[store] refactor: SledTree::open need not to be async

[drmingdrmer]

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Summary

[store] refactor: SledTree::open need not to be async

Changelog

• Improvement

Related Issues

• FuseStore v0.1  #271
• [store] impl sled db backed raft-state-machine. #1080

[databend-bot]

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[databend-bot]

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[databend-bot]

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[PsiACE]

/LGTM

[databend-bot]

Approved! Thank you for the PR @drmingdrmer

[codecov-commenter]

Codecov Report

Merging #1796 (71e0608) into master (607985a) will decrease coverage by 0%.
The diff coverage is 100%.

@@          Coverage Diff           @@
##           master   #1796   +/-   ##
======================================
- Coverage      71%     70%   -1%     
======================================
  Files         630     630           
  Lines       37536   37531    -5     
======================================
- Hits        26653   26647    -6     
- Misses      10883   10884    +1     

Impacted Files	Coverage Δ
store/src/meta_service/raft_log.rs	91% <100%> (ø)
store/src/meta_service/raft_state.rs	90% <100%> (ø)
store/src/meta_service/sled_tree.rs	94% <100%> (-1%)	⬇️
store/src/meta_service/sled_tree_test.rs	97% <100%> (ø)
store/src/meta_service/state_machine.rs	90% <100%> (ø)
store/src/meta_service/meta_service_impl.rs	75% <0%> (-2%)	⬇️

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[databend-bot]

CI Passed
Reviewer Approved
Let's Merge