Github user guoxiaolongzte commented on the issue:
https://github.com/apache/spark/pull/20259
1. Concerned about the start-up time is to see if the system is stable.
2. Our system has 50,000 + app running every day, maser will generate a lot
of app registration, management and other log information, the log volume will
be great, all must use log4j, org.apache.log4j.DailyRollingFileAppender
rollback log, if not In this way, the log file will bang the local disk.
3. Production environment lunix server user name and password only super
managers have, we ordinary developers do not have permission, only through the
WEB UI to access.
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