1.错误：Sqoop:Import failed: java.lang.ClassNotFoundException: org.apache.hadoop.hive.conf.HiveConf
解决方法1：
将mysql中的数据导入到hive中报错：
这是因为sqoop需要一个hive的包，将hive/lib中的hive-common-2.3.3.jar拷贝到sqoop的lib目录中，重新执行试试。
解决方法2：
在/etc/profile中添加下面一行
export HADOOP_CLASSPATH=$HADOOP_CLASSPATH:$HIVE_HOME/lib/*
2.错误：main ERROR Could not register mbeans java.security.AccessControlException: access denied ("javax.management.MBeanTrustPermission" "register")
解决方法：
Just add the following lines to your java.policy file unter <JRE_HOME>/lib/security.
grant {
permission javax.management.MBeanTrustPermission "register";
};
3.错误：ERROR exec.DDLTask: java.lang.NoSuchMethodError: com.fasterxml.jackson.databind.ObjectMapper.readerFor(Ljava/lang/Class;)Lcom/fasterxml/jackson/databind/ObjectReader;
解决犯法：jackson jar包版本冲突，将sqoop/lib下的jackson*.jar备份，将hive/lib包下的jackson*.jar包拷贝过来
4.错误：Required table missing : "DBS" in Catalog "" Schema "". DataNucleus requires this table to perform its persistence operations. Either your MetaData is incorrect, or you need to enable "datanucleus.schema.autoCreateTables"
解决方法：
到hive-site.xml中找到datanucleus.schema.autoCreateAll 把value改成true