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From David Medinets <>
Subject Re: how to maintain versioning in D4M schema?
Date Thu, 26 Nov 2015 16:52:21 GMT
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 <>

> 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

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