hive错误记录，

hive错误记录，

系统环境：

hadoop CDH3u2

hive 0.71 3u4

 

错误1

使用默认的derby数据库，当查询数据库的时候，比如使用 show tables，报错如下：

 写道 FAILED: Error in metadata: javax.jdo.JDOFatalDataStoreException: Cannot get a connection, pool error Could not create a validated object, cause: A read-only user or a user in a read-only database is not permitted to disable read-only mode on a connection.
NestedThrowables:
org.apache.commons.dbcp.SQLNestedException: Cannot get a connection, pool error Could not create a validated object, cause: A read-only user or a user in a read-only database is not permitted to disable read-only mode on a connection.
FAILED: Execution Error, return code 1 from org.apache.hadoop.hive.ql.exec.DDLTask

 

解决办法：通过conf/hive-site.xml文件找到derby数据库的路径，在cdh3中为"/var/lib/hive/metastore/metastore_db"，然后执行sudo chown -R hadoop:hadoop /var/lib/hive/，这里假设我运行用户名为hadoop。

 

问题原因：root用户创建了derby数据库锁，hadoop用户无法操作root用户锁文件。

 

 

错误2

查询使用RegexSerDe的表出现如下错误：

 

Hive ClassNotFoundException: org.apache.hadoop.hive.contrib.serde2.RegexSerDe

 

解决办法：

 

vi hive/conf/hive-site.xml 

 

<property>
  <name>hive.aux.jars.path</name>
  <value>file:////usr/lib/hive/lib/hive-contrib-0.7.1-cdh3u4.jar</value>
</property>

 

 

 

 

 

-heipark