• 错误log描述

[root@hadoop102 hive]# schematool -initSchema -dbType mysql -verbose
SLF4J: Class path contains multiple SLF4J bindings.
SLF4J: Found binding in [jar:file:/opt/module/hive/lib/log4j-slf4j-impl-2.10.0.jar!/org/slf4j/impl/StaticLoggerBinder.class]
SLF4J: Found binding in [jar:file:/opt/module/hadoop-3.1.3/share/hadoop/common/lib/slf4j-log4j12-1.7.25.jar!/org/slf4j/impl/StaticLoggerBinder.class]
SLF4J: See http://www.slf4j.org/codes.html#multiple_bindings for an explanation.
SLF4J: Actual binding is of type [org.apache.logging.slf4j.Log4jLoggerFactory]
Metastore connection URL: jdbc:mysql://hadoop102:3306/metastore?useSSL=false
Metastore Connection Driver : com.mysql.jdbc.Driver
Metastore connection User: root
org.apache.hadoop.hive.metastore.HiveMetaException: Failed to load driver
Underlying cause: java.lang.ClassNotFoundException : com.mysql.jdbc.Driver
org.apache.hadoop.hive.metastore.HiveMetaException: Failed to load driver

• 问题原因

系统配置的路径中找到两个slf4j-log4j12-1.7.25.jar不同版本的jar包。

高版本可以向下兼容，可以cd进入低版本jar包的路径下，修改包名或者直接remove移除。

• 解决办法

　　cd /opt/module/hadoop-3.1.3/share/hadoop/common/lib/

　　rm -rf slf4j-log4j12-1.7.25.jar

 问题解决！