Cassandra + Hector: How to navigate/jump backwards in the result?

I would be thankfull for advice, how to navigate backwards with get_slice (columns):

If I have these colum names 1 2 3 4 5 6 7 8 9 10 11 12 and I have the start column/key 8 and want to query 4 columsn, I want to get the results 8 7 6 5 or 5 6 7 8 (order does not matter), but I need t开发者_StackOverflow中文版o navigate backwards.

(Just to clarify, I only have start column/key = 8. I do not know colum 5 so I could query with start column/key = 5. 5 is unknown here therefore I need to query backwards, as described...)

How to do this? the "reversed=true" seems only to return the results "reversed" in this example this would be 11 10 9 8. This is not what I want, I need to move the cursor backwards. How to do this?

Thank you very much!

Jens

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https://github.com/jbohman/logsandra/wiki/Pagination-in-Cassandra