java - centos8 install azkaban 加载类 `com.mysql.jdbc.Driver'。这已被弃用。新的驱动程序类是`com.mysql.cj.jdbc.Driver'

Question

环境：
CentOS8
mysql Ver 8.0.17
java版本“1.8.0_261”
azkaban v3.90.0。

当我尝试安装 Azkaban Executor Server

cd /home/azkaban/azkaban/azkaban-exec-server/build/distributions
tar -xzvf azkaban-exec-server-3.91.0-4-gb468bffe.tar.gz

cd /home/azkaban/azkaban/azkaban-exec-server/build/distributions/azkaban-exec-server-3.91.0-4-gb468bffe/conf
cp azkaban.properties azkaban.properties_bak20200724
vi azkaban.properties
mysql.database=azkaban
mysql.user=azkaban
mysql.password=azkabanpassword

然后运行：

cd /home/azkaban/azkaban/azkaban-exec-server/build/distributions/azkaban-exec-server-3.91.0-4-gb468bffe
./bin/start-exec.sh

在 executorServerLog__2020-07-24+17:59:49.out

ERROR [MySQLDataSource] [main] [Azkaban] Failed to find write-enabled DB connection. Wait 15 seconds and retry. No.Attempt = 2
java.sql.SQLException: Cannot create PoolableConnectionFactory (Could not create connection to database server.)

所以我下载了 mysql-connector-java-8.0.17.jar 并将这个 jar 放入 '/home/azkaban/azkaban/azkaban-exec-server/build/distributions/azkaban-exec-server-3.91.0-4-gb468bffe /lib'

当我尝试重新开始时，也失败了：

ERROR [StdOutErrRedirect] [main] [Azkaban] Loading class `com.mysql.jdbc.Driver'. 
This is deprecated. The new driver class is `com.mysql.cj.jdbc.Driver'. 
The driver is automatically registered via the SPI and manual loading of the driver class is generally unnecessary.

任何人都可以帮忙吗？

Answer 1

替换代码： com.mysql.jdbc.Driver第51行代码

azkaban/akaban-db/src/main/java/azkaban/db/MySQLDataSource.java 

至

com.mysql.cj.jdbc.Driver 

重建

Answer 2

将 mysql 从 8.0.17 降级到 mysql5.7.31 解决它。