emqx4.3/changes/ce/feat-11597.en.md

• Upgrade ekka to 0.15.13, which includes the following changes:
  • upgrade Mria to 0.6.2:
  • make bootstrap batch size configurable, Mria PR
  • improve robustness of mria_membership processes, Mria PR
  • fix log message formatting error
• Add node.default_bootstrap_batch_size option to EMQX configuration. Increasing the value of this option can greatly reduce a replicant node startup time, especially when EMQX cluster interconnect network latency is high and EMQX built-in database holds large amount of data, e.g. when the number of subscriptions is high.