[store]: refactor: upgrade raft to 0.6.2-alpha.10

[drmingdrmer]

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Summary

[store]: refactor: upgrade raft to 0.6.2-alpha.10

change-membership should be log driven but not channel driven

databendlabs/openraft@v0.6.2-alpha.9...datafuse-extras:v0.6.2-alpha.10

A membership change involves two steps: the joint config phase and the
final config phase.
Each phase has a corresponding log invovled.

Previously the raft setup several channel to organize this workflow,
which makes the logic hard to understand and introduces complexity when
restarting or leadership transfered: it needs to re-establish the channels and tasks.

According to the gist of raft, all workflow should be log driven.
Thus the new approach:

• Write two log(the joint and the final) at once it recevies a
  change-membership request.
• All following job is done according to just what log is committed.

This simplifies the workflow and makes it more reliable and intuitive to
understand.

Related changes:

• When change_membership is called, append 2 logs at once.

• Introduce universal response channel type to send back a message when
  some internal task is done: ResponseTx, and a universal response
  error type: ResponseError.

• Internal response channel is now an Option<ResponseTx>, since the
  first step of membership change does not need to respond to the
  caller.

• When a new leaser established, if the last log is a joint config
  log, append a final config log to let the partial change-membership be
  able to complete.

  And the test is added.

• Removed membership related channels.

[store] refactor: add per-case logging

Introduce common_tracing::init_tracing() to create a logger that will be
released when being dropped.

Every test need to hold a guard to ensure the log subscriber
working.

Elaborate some tracing span arguments.

Changelog

• Improvement

Related Issues

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

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[bohutang]

Cool
Thank you @drmingdrmer

[databend-bot]

CI Passed
Reviewer Approved
Let's Merge