David,
But this is the case when we store versions based on timestamp field.
The point is, in D4M schema we can not achieve it by doing this. In this
case we are considering CF to store timestamp in reverse order as
described by Dylan. Then how can we configure Accumulo to return only
latest version and store only 5 versions?
Thanks
Mohit Kaushik
On 11/27/2015 09:54 AM, David Medinets wrote:
From the user manual:
user@myinstance mytable> config -t mytable -s
table.iterator.scan.vers.opt.maxVersions=5
user@myinstance mytable> config -t mytable -s
table.iterator.minc.vers.opt.maxVersions=5
user@myinstance mytable> config -t mytable -s
table.iterator.majc.vers.opt.maxVersions=5
On Thu, Nov 26, 2015 at 11:10 PM, shweta.agrawal
<[email protected] <mailto:[email protected]>> wrote:
I want to maintain 5 versions only and user can enter any number
of versions but I want to keep only 5 latest version.
On Friday 27 November 2015 09:38 AM, David Medinets wrote:
Do you want five versions of every entry or will the number of
versions vary?
On Thu, Nov 26, 2015 at 10:53 PM, shweta.agrawal
<[email protected] <mailto:[email protected]>> wrote:
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?
Thanks
Shweta
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
<[email protected]
<mailto:[email protected]>> 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
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