On Wed, Mar 24, 2010 at 4:57 AM, Colin Vipurs <zodiac...@gmail.com> wrote:
...
> ColumnFamily {
> 'key1' {
> 'SuperColumn1' {
> 'Column1' : <somevalue>
> 'Column2' : <somevalue>
> }
> 'SuperColumn2' {
> 'Column3' : <somevalue>
> }
> }
> 'key2' {
> 'SuperColumn1' {
> 'Column1' : <somevalue>
> }
> }
> }
>
> Could I get all keys/supercolumns where 'Column1' exists? fyi I'm
> using the Hector Java client for my work.
I think maybe you're asking because you want to perform schema migration.
If so, one option is to have client-side code that mutates to the
later schema upon encountering the old schema.
Another option is to have a schema-versioning column, and have a job
that fetches and mutates records w/ the old schema.
If there are other ways of handling schema migration, I'm curious?
