node@node0:~$ /export/server/hive/bin/schematool -initSchema -dbType mysql -verbose
Metastore connection URL: jdbc:mysql://node0:3306/hive?createDatabaseIfNotExist=true&useSSL=false
Metastore Connection Driver : com.mysql.cj.jdbc.Driver
Metastore connection User: hive
org.apache.hadoop.hive.metastore.HiveMetaException: Failed to load driver
Underlying cause: java.lang.ClassNotFoundException : com.mysql.cj.jdbc.Driver
org.apache.hadoop.hive.metastore.HiveMetaException: Failed to load driver
at org.apache.hadoop.hive.metastore.tools.HiveSchemaHelper.getConnectionToMetastore(HiveSchemaHelper.java:97)
at org.apache.hive.beeline.HiveSchemaTool.getConnectionToMetastore(HiveSchemaTool.java:169)
at org.apache.hive.beeline.HiveSchemaTool.testConnectionToMetastore(HiveSchemaTool.java:475)
at org.apache.hive.beeline.HiveSchemaTool.doInit(HiveSchemaTool.java:581)
at org.apache.hive.beeline.HiveSchemaTool.doInit(HiveSchemaTool.java:567)
at org.apache.hive.beeline.HiveSchemaTool.main(HiveSchemaTool.java:1517)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.apache.hadoop.util.RunJar.run(RunJar.java:323)
at org.apache.hadoop.util.RunJar.main(RunJar.java:236)
Caused by: java.lang.ClassNotFoundException: com.mysql.cj.jdbc.Driver
at java.net.URLClassLoader.findClass(URLClassLoader.java:387)
at java.lang.ClassLoader.loadClass(ClassLoader.java:418)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:352)
at java.lang.ClassLoader.loadClass(ClassLoader.java:351)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:264)
at org.apache.hadoop.hive.metastore.tools.HiveSchemaHelper.getConnectionToMetastore(HiveSchemaHelper.java:85)
... 11 more
*** schemaTool failed ***
node@node0:~$
所有配置都正常就是提示mysql连接驱动不存在
这个错误提示表明无法找到 MySQL 连接驱动类 "com.mysql.cj.jdbc.Driver"。在处理这个问题之前,可以尝试以下几个步骤来解决该问题:
尝试上述步骤后,重新初始化 Hive 的元数据数据库,看看问题是否得到解决。如果问题仍然存在,请提供更多关于你的配置和环境的详细信息,以便我可以更进一步地帮助你解决问题。