「Hive元数据问题」hive.metastore.HiveMetaException: Failed to get schema version.

raini@biyuzhe:~$ schematool -dbType mysql -initSchema
SLF4J: Class path contains multiple SLF4J bindings.
SLF4J: Found binding in [jar:file:/home/raini/app/apache-hive-2.1.1-bin/lib/log4j-slf4j-impl-2.4.1.jar!/org/slf4j/impl/StaticLoggerBinder.class]
SLF4J: Found binding in [jar:file:/home/raini/app/hadoop-2.8.0/share/hadoop/common/lib/slf4j-log4j12-1.7.10.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://localhost:3306/hive?createDatabaseIfNotExist=true&useSSL=false
Metastore Connection Driver : com.mysql.jdbc.Driver
Metastore connection User: hive
Starting metastore schema initialization to 2.1.0
Initialization script hive-schema-2.1.0.mysql.sql
Initialization script completed
org.apache.hadoop.hive.metastore.HiveMetaException: Failed to get schema version.
Underlying cause: com.mysql.jdbc.exceptions.jdbc4.MySQLSyntaxErrorException : Table 'hive.VERSION' doesn't exist
SQL Error code: 1146
Use --verbose for detailed stacktrace.
*** schemaTool failed ***

问题如上，安装hive-2.1.1 后格式化不成功，没有找到 metastore（用的是mysql，升级之前还是好好的）

原因：

之前用的hive-1.2.1，mysql连接metastore使用的user用户为hive，可能元数据删除不干净或者有某些配置文件无法删除掉吧，

解决：

使用另一个user。

mysql> create user 'hive1'@'%' identified by 'hive1';
mysql> grant all on *.* to 'hive1'@localhost identified by 'hive1';
mysql> flush privileges;

并修改：hive-site.xml

 
    javax.jdo.option.ConnectionUserName 
   hive1 
 

 
   javax.jdo.option.ConnectionPassword
   hive1 
 

这个是hive2.0才需要的步骤吧（执行它）

mysql> SOURCE /home/raini/app/hive/scripts/metastore/upgrade/mysql/hive-schema-2.1.0.mysql.sql;

启动hive搞定～

问题2：

hive (default)> create database anserchapp;
FAILED: Execution Error, return code 1 from org.apache.hadoop.hive.ql.exec.DDLTask. MetaException(message:Got exception: java.io.IOException Failed on local exception: java.io.IOException: Couldn't set up IO streams; Host Details : local host is: "biyuzhe/127.0.1.1"; destination host is: "user":8020; )

设置：

mysql> ALTER DATABASE hive character set latin1;

Query OK, 1 row affected (0.00 sec)

报错：

hive (default)> create database anserchapp;
FAILED: Execution Error, return code 1 from org.apache.hadoop.hive.ql.exec.DDLTask. MetaException(message:java.lang.IllegalArgumentException: java.net.UnknownHostException: user)