Support new joiner functionality #543
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* A new setting, `use_new_joiner_type_`, has been introduced, which defaults to false. * When activated, any new members are immediately added to the cluster configuration as a "new joiner." Similar to learners, new joiners do not participate in the quorum; they cannot initiate or partake in voting. * Once the log gap of a new joiner narrows to less than `log_sync_stop_gap_`, the member transitions to a regular status and becomes eligible to engage in the leader election process. * The advantage of this feature is that it allows a newly elected leader to continue the synchronization process with the new joiner without needing to invoke the `add_srv()` API again.
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A new setting,
use_new_joiner_type_, has been introduced, which defaults to false.When activated, any new members are immediately added to the cluster configuration as a "new joiner." Similar to learners, new joiners do not participate in the quorum; they cannot initiate or partake in voting.
Once the log gap of a new joiner narrows to less than
log_sync_stop_gap_, the member transitions to a regular status and becomes eligible to engage in the leader election process.The advantage of this feature is that it allows a newly elected leader to continue the synchronization process with the new joiner without needing to invoke the
add_srv()API again.