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Posted to user@cassandra.apache.org by buddhasystem <po...@bnl.gov> on 2011/02/08 13:32:45 UTC
Can serialized objects in columns serve as ersatz superCFs?
Seeing that discussion here about indexes not supported in superCFs, and less
than clear future of superCFs altogether, I was thinking about getting a
modicum of same functionality with serialized objects inside columns. This
way the column key becomes sort of analog of supercolumn key, and I handle
the dictionaries I receive in the client.
Does this sound OK?
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Re: Can serialized objects in columns serve as ersatz superCFs?
Posted by buddhasystem <po...@bnl.gov>.
Thanks for the comment! In my case, I want to store various time slices as
indexes, so the content can be serialized as comma-separated concatenation
of unique object IDs. Example: on 20101204, multiple clouds experienced a
variety of errors in job execution. In addition, multiple users ran (or
failed) on different clouds. If I combine user id, cloud id and error code,
I can relatively easily drill for errors on a particular date. So each CF
maps to a date, and each column in it is a compound index.
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Re: Can serialized objects in columns serve as ersatz superCFs?
Posted by Dave Revell <da...@meebo-inc.com>.
Yes, this works well for me. I have no SCFs but many columns contain JSON.
Depending on your time/space/compatibility tradeoffs you can obviously pick
you own serialization method.
Best,
Dave
On Feb 8, 2011 4:33 AM, "buddhasystem" <po...@bnl.gov> wrote:
>
> Seeing that discussion here about indexes not supported in superCFs, and
less
> than clear future of superCFs altogether, I was thinking about getting a
> modicum of same functionality with serialized objects inside columns. This
> way the column key becomes sort of analog of supercolumn key, and I handle
> the dictionaries I receive in the client.
>
> Does this sound OK?
>
> --
> View this message in context:
http://cassandra-user-incubator-apache-org.3065146.n2.nabble.com/Can-serialized-objects-in-columns-serve-as-ersatz-superCFs-tp6003775p6003775.html
> Sent from the cassandra-user@incubator.apache.org mailing list archive at
Nabble.com.