@lie ,   MySQL 8 is not a supported version for CM/CDH 6.3.1, which is the version you're using, as you can see here: https://docs.cloudera.com/documentation/enterprise/6/release-notes/topics/rg_database_requirements.html   You should pick a version that is compatible with your CDH version. Alternatively, you can upgrade to CDP.   Cheers, André ... View more