Hello, this is the official documentation CDH 5.8 official upgrade doc  . I think the critical point it's the kafka upgrade version from 0.8 (1 ) to 0.9 ( 2 ) if you have a custom application that is using kafka as a distributed queue system.   Regards ... View more

Hello,            could you post the log in directory : /var/log/cloudera-scm-agent ?   Regards ... View more

Hello,  Gateway is a particular type of role, and it means that is a host that will receive a client configuration. So it's not a service with a process, this is the reason why is gray.   Regards ... View more

Hello,            are you using the Phonex Clab ? What  is the version of it ?     Kind Regards ... View more

Hello,            yarn makes three checks ( source code )  : compare the name of the user with string root with string compare (strcmp(user, "root") == 0 verify if your user is white listed   ( !is_whitelisted(user) check the uid of the user with minuid.  ( user_info->pw_uid < min_uid  ) For now the only workaround I found is to create a new user with UID and GID equal to 0 and insert the name of the user in white listed and set min user id to 0.   There is an important motivation to use root: if you need to use distcp on a target location that is an NFS filesystem or a sharable filesystem mounted local on the datanode/workernode to make a backup.   Infact in that case, if you run a job with a normal user, it's not possible to change the owner of the file, so the distcp backup will fails.  Obviously if you run as root it will fail too for the hard coded control.   Kind Regards     ... View more

Hello Darren,                            could you explain better what are the problems about postgresql license ? I am also in the PostgreSQL community, so if it's possible I will help with.   Kind Regards ... View more