accumulo-user mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "shweta.agrawal" <>
Subject Re: how to maintain versioning in D4M schema?
Date Fri, 27 Nov 2015 03:53:35 GMT
Thanks Dylan and David.
I can store version information in column family. But my problem is when 
I have many versions of the same key how will I manage that. In Accumulo 
versioning I can specify that how many versions I want to manage.

Suppose I have 10 versions and I only want 5 versions to store, how to 
manage this in a big table?


On Thursday 26 November 2015 10:22 PM, David Medinets wrote:
> What are the query patterns? If you are versioning for auditing then 
> changing the VersioningIterator seems the easiest approach. You could 
> also store application-specific version information in the column 
> family. One of the reasons that D4M does not use it is to allow 
> application-specific uses. Using the CF means that any applications 
> that understand D4M would not need to change their queries to adjust 
> for the version information.
> On Thu, Nov 26, 2015 at 4:26 AM, shweta.agrawal 
> < <>> wrote:
>     Hi,
>     I have my data stored in D4M style. I also want to maintain
>     versions of different value on the basis of time.  As in D4M
>     style  data is only in rowid and colQualifier only.
>     Is there any way to achieve versioning in D4M schema?
>     Thanks
>     Shweta

View raw message