zhangb0120 opened a new issue #3951:
URL: https://github.com/apache/incubator-dolphinscheduler/issues/3951


   mysql库有短暂的几分钟的down掉,但是之后就自动起来了,看了一下alert日志,好险是连接不到mysql就自动down掉了
   [ERROR] 2020-10-19 18:25:30.601 
com.alibaba.druid.pool.DruidPooledStatement:[362] - CommunicationsException, 
druid version 1.1.14, jdbcUrl : 
jdbc:mysql://*.*.*.*:3306/dolphinscheduler?characterEncoding=UTF-8&allowMultiQueries=true,
 testWhileIdle true, idle millis 5004, minIdle 5, poolingCount 4, 
timeBetweenEvictionRunsMillis 60000, lastValidIdleMillis 5004, driver 
com.mysql.jdbc.Driver, exceptionSorter 
com.alibaba.druid.pool.vendor.MySqlExceptionSorter
   [ERROR] 2020-10-19 18:25:30.608 
com.alibaba.druid.pool.DruidDataSource:[2572] - create connection SQLException, 
url: 
jdbc:mysql://172.18.102.53:3306/dolphinscheduler?characterEncoding=UTF-8&allowMultiQueries=true,
 errorCode 0, state 08S01
   com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: Communications link 
failure
   
   这个进程多久时间连接不上mysql,就会自动down掉,能否手动设置这个时间


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