EMQ X 4.2.9 is released now, it mainly includes the following changes:

emqx

Bug fixes:

• Fix MQTT packet receiving count issue

  Github PR: emqx#4425

• Fix the processing of heartbeat packets

  Github Issue: emqx#4370 Github PR: emqx#4425

emqx-auth-mnesia

Bug fixes:

• Fixed database storage issues and CLI issues

  Github PR: emqx-auth-mnesia#54

• Fix the issue that the password_hash configuration does not take effect

  Github PR: emqx-auth-mnesia#56