* unify leader change and machine not found (#4022)
Co-authored-by: Sophie <[email protected]>
* delete src/common/encryption src/common/base/stringunorderedmap (#3867)
* delete src/common/encryption
* encryption format code
* Update error message when connect with an out-of-date client (#4021)
* Update error message
* Do clientAddr check before FLAGS_enable_authorize check
* Fix typo
Co-authored-by: yaphet <[email protected]>
Co-authored-by: Sophie <[email protected]>
Co-authored-by: yuehua.jia <[email protected]>
