我已经创建了一个hbase表

create 'user_data_table','personal_data','professional_data';

然后我在表中插入了几条记录

put 'user_data_table','user1','personal_data:Location','IL'
put 'user_data_table','user1','personal_data:FName','Deb'
put 'user_data_table','user1','personal_data:LName','D'
put 'user_data_table','user1','professional_data:dept','IT'
put 'user_data_table','user1','professional_data:salary','2000'

put 'user_data_table','user2','personal_data:FName','CH'
put 'user_data_table','user2','personal_data:LName','AK'
put 'user_data_table','user2','professional_data:dept','IT'
put 'user_data_table','user2','professional_data:salary','80000'

我创建了一个快照作为 snapshot 'user_data_table', 'snapshot-day-1' 然后我插入/更新了以下记录。

put 'user_data_table','user1','personal_data:Location','VA'
put 'user_data_table','user1','professional_data:salary','3000'

当我尝试引用配置单元表中的快照时，我没有得到旧数据。相反，我每次都会得到最新的数据。你知道为什么会这样吗。使用hbase snapshot reference创建配置单元表的命令如下所示。

CREATE EXTERNAL TABLE if not exists hbase_user_data_snapshot1_table(key string, Location string,FName string,LName string, dept string,salary string) 
    STORED BY 'org.apache.hadoop.hive.hbase.HBaseStorageHandler'
    WITH SERDEPROPERTIES ("hbase.columns.mapping" = ":key,personal_data:Location,personal_data:FName,personal_data:LName,professional_data:dept,professional_data:salary",
    "hive.hbase.snapshot.name"="snapshot-day-1")
    TBLPROPERTIES ("hbase.table.name" = "user_data_table");