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FAILED: SemanticException org.apache.hadoop.hive.ql.metadata.HiveException: java.lang.RuntimeExcepti
作者:互联网
记录下hive数据库启动之后,show databases;
报错如下:
hive (default)> show functions;
FAILED: SemanticException org.apache.hadoop.hive.ql.metadata.HiveException: java.lang.RuntimeException: Unable to instantiate org.apache.hadoop.hive.ql.metadata.SessionHiveMetaStoreClient
hadoop集群和hive数据库之前我已经配置好的,启动啥的也是好的
原因:
我在hdfs的web管理网页上讲hive的文件数据清理一空,导致集群中的hive数据库中的数据丢失,然而mysql的存储的元数据又存在,故而在输入查询命令的时候会出现报错
解决办法:
- 1.关闭hive和mysql数据库,在这只是退出来,在
hive-site.xml
文件末尾添加
<property>
<name>datanucleus.schema.autoCreateAll</name>
<value>true</value>
</property>
- 2.在mysql数据库中删除数据库
hivemetadata
数据库,这是存储hive数据库中的所有元数据的,切记生产误用
drop database hivemetadata;
- 3.在集群中所有装有hive的虚拟机中的hive根目录下bin目录下执行如下代码
hive --service metastore &
静静看日志,待出现
[root@linux123 bin]# hive --service metastore &
[1] 8523
[root@linux123 bin]# 2021-11-13 10:42:12: Starting Hive Metastore Server
SLF4J: Class path contains multiple SLF4J bindings.
SLF4J: Found binding in [jar:file:/opt/lagou/servers/hive-2.3.7/lib/log4j-slf4j-impl-2.6.2.jar!/org/slf4j/impl/StaticLoggerBinder.class]
SLF4J: Found binding in [jar:file:/opt/lagou/servers/hadoop-2.9.2/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]
^C
[root@linux123 bin]# hive
SLF4J: Class path contains multiple SLF4J bindings.
SLF4J: Found binding in [jar:file:/opt/lagou/servers/hive-2.3.7/lib/log4j-slf4j-impl-2.6.2.jar!/org/slf4j/impl/StaticLoggerBinder.class]
SLF4J: Found binding in [jar:file:/opt/lagou/servers/hadoop-2.9.2/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]
Logging initialized using configuration in jar:file:/opt/lagou/servers/hive-2.3.7/lib/hive-common-2.3.7.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 (default)> show functions;
OK
tab_name
!
!=
说明metastore服务已开启,然后Ctrl+C,再hive,进去
标签:HiveException,lang,java,jar,SLF4J,hive,hadoop,slf4j,org 来源: https://blog.csdn.net/Mark_CHYL/article/details/121301361