Exception in thread "main" java.lang.RuntimeException: Hive metastore database is not initialized. Please use schematool (e.g. ./schematool -initSchema -dbType ...) to create the schema. If needed, don't forget to include the option to auto-create the underlying database in your JDBC connection string (e.g. ?createDatabaseIfNotExist=true for mysql)
报错解决：
在hive的bin目录下执行：./schematool -dbType mysql -initSchema
2.Exception in thread "main" java.lang.IllegalArgumentException: java.net.URISyntaxException: Relative path in absolute URI: ${system:java.io.tmpdir%7D/$%7Bsystem:user.name%7D
解决方案如下：
1.查看hive-site.xml配置，会看到配置值含有"system:java.io.tmpdir"的配置项
2.在hive目录下新建文件夹iotmp
3.将含有"system:java.io.tmpdir"的配置项的值修改为如上地址
启动hive，成功！
3.The specified datastore driver ("com.mysql.jdbc.Driver") was not found in the CLASSPATH
解决方法：
将将mysql-connector-java-5.1.37/mysql-connector-java-5.1.37-bin.jar放在$HIVE_HOME/lib
注意：mysql-connector-java-version-bin.jar的version(版本)不能太低，我试过5.1.7 版本，即使把jar放在lib下也会报错