-Add few record(s) to a Hive table or a HDFS file on a daily basis
Raj Hadoop 2014-02-10, 02:46
My requirement is a typical Datawarehouse and ETL requirement. I need to accomplish
1) Daily Insert transaction records to a Hive table or a HDFS file. This table or file is not a big table ( approximately 10 records per day). I don't want to Partition the table / file.
I am reading a few articles on this. It was being mentioned that we need to load to a staging table in Hive. And then insert like the below :
insertoverwrite tablefinaltable select*fromstaging;
I am not getting this logic. How should I populate the staging table daily.