Discussion thread using HBASE
I'm pretty new to Hbase.. 

I have a requirement for implementing a discussion thread using hbase..

Each discussion has a new  row key .. 

Fetching the discussions from the hbase is in the order of the rowkey created(with a time stamp)

But whenever a new comment is added to a discussion , 
i want to show that discussion first to the user.

But according to my present scenario , when i comment on a thread down the list it will not come up since the rowkey of the discusison thread is based on time stamp .. 

I thought of using a filter to achieve this ..But it will be a costly operation . 

Is there any other way . 

Thanks in advance.
Discussion thread using HBASE
===

I'm pretty new to Hbase.. 

I have a requirement for implementing a discussion thread using hbase..

Each discussion has a new  row key .. 

Fetching the discussions from the hbase is in the order of the rowkey created(with a time stamp)

But whenever a new comment is added to a discussion , 
i want to show that discussion first to the user.

But according to my present scenario , when i comment on a thread down the list it will not come up since the rowkey of the discusison thread is based on time stamp .. 

I thought of using a filter to achieve this ..But it will be a costly operation . 

Is there any other way . 

Thanks in advance.