记录一下安装hive遇到的坑

坑1：格式化hive时，一直格式化不成功
[root@hadoop03 lib]# schematool -dbType mysql -initSchema
Metastore connection URL: jdbc:mysql://192.168.76.136:3306/hive?createDatabaseIfNotExist=true
Metastore Connection Driver : com.mysql.jdbc.Driver
Metastore connection User: root
org.apache.hadoop.hive.metastore.HiveMetaException: Failed to get schema version.
*** schemaTool failed ***
原因：由于配置好以后，metastore服务没有启动。
解决：启动metastore：bin/hive --service metastore & 再格式化

坑2：同样格式化hive的时候
org.apache.hadoop.hive.metastore.HiveMetaException: Failed to get schema version.
Underlying cause: java.sql.SQLException : Access denied for user ‘root’@‘192.168.136.136’ (using password: YES)
SQL Error code: 1045
Use --verbose for detailed stacktrace.
*** schemaTool failed ***
原因1：配置文件写的是本地的mysql，但是mysql密码却写的linux上的密码
解决1：将密码改为本地密码后好了.
原因2：还有可能的原因是没有权限；
解决2：grant all privileges on . to root@’%’ identified by ‘root’; 再刷新flush privileges;

坑3：进入hive的时候，无法进入
[root@hadoop01 bin]# hive
Cannot find hadoop installation: $HADOOP_HOME or $HADOOP_PREFIX must be set or hadoop must be in the path
原因：/opt/hive-3.1.1/conf/hive-env.sh里面HADOOP_HOME的路径配置错误
解决：修改后ok

坑4:进入hive内的问题，这个是启动的客户机
[root@hadoop04 opt]# hive
SLF4J: Class path contains multiple SLF4J bindings.
SLF4J: Found binding in [jar:file:/opt/hbase-1.2.3/lib/slf4j-log4j12-1.7.5.jar!/org/slf4j/impl/StaticLoggerBinder.class]
SLF4J: Found binding in [jar:file:/opt/hadoop-3.1.1/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.slf4j.impl.Log4jLoggerFactory]
2018-11-21 09:04:50,335 WARN [main] util.NativeCodeLoader: Unable to load native-hadoop library for your platform… using builtin-java classes where applicable
SLF4J: Class path contains multiple SLF4J bindings.
SLF4J: Found binding in [jar:file:/opt/hive-3.1.1/lib/log4j-slf4j-impl-2.10.0.jar!/org/slf4j/impl/StaticLoggerBinder.class]
SLF4J: Found binding in [jar:file:/opt/hadoop-3.1.1/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]
Hive Session ID = 9e091b0f-7164-4f16-a3d4-f0bd35ae3b8a

Logging initialized using configuration in jar:file:/opt/hive-3.1.1/lib/hive-common-3.1.1.jar!/hive-log4j2.properties Async: true
Hive-on-MR is deprecated in Hive 2 and may not be available in the future versions. Consider using a different execution engine (i.e. spark, tez) or using Hive 1.X releases.
hive> show databases;
FAILED: HiveException java.lang.RuntimeException: Unable to instantiate org.apache.hadoop.hive.ql.metadata.SessionHiveMetaStoreClient
hive> show tables;
FAILED: HiveException java.lang.RuntimeException: Unable to instantiate org.apache.hadoop.hive.ql.metadata.SessionHiveMetaStoreClient
原因：hive的lib目录下没有放java和mysql的连接jar包
解决：把jar包放到hive的lib目录下

坑5：用beeline启动时
[root@hadoop04 opt]# beeline
SLF4J: Class path contains multiple SLF4J bindings.
SLF4J: Found binding in [jar:file:/opt/hive-3.1.1/lib/log4j-slf4j-impl-2.10.0.jar!/org/slf4j/impl/StaticLoggerBinder.class]
SLF4J: Found binding in [jar:file:/opt/hadoop-3.1.1/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]
Beeline version 3.1.1 by Apache Hive
beeline> !connect jdbc:hive2://hadoop04:10000
Connecting to jdbc:hive2://hadoop04:10000
Enter username for jdbc:hive2://hadoop04:10000: root
Enter password for jdbc:hive2://hadoop04:10000: ****
18/11/21 09:44:43 [main]: WARN jdbc.HiveConnection: Failed to connect to hadoop04:10000
Could not open connection to the HS2 server. Please check the server URI and if the URI is correct, then ask the administrator to check the server status.
Error: Could not open client transport with JDBC Uri: jdbc:hive2://hadoop04:10000: java.net.ConnectException: Connection refused (state=08S01,code=0)
原因：hiveserver2 &未启动
解决：