No, we can't scan in reverse. I don't think it's possible to do so
with the components we have today - there's no previous method on
mapfile, only next. Out of curiosity, hat's the use case for getting
the last N records in the table?
-Bryan
On Apr 29, 2008, at 8:08 AM, Zhou Wei wrote:
Hm, tricky. You don't have the scan the whole table - just the
last region. You can find out what the start key of the last
region is by using HTable#getStartKeys. If this isn't an
acceptable solution, we might be able to think up a way to get the
last real row of a table more efficiently.
Actually, I need to obtain the 3333 rows starting from the last row
rather than the first row.
So I wonder is it possible to obtain a scanner that scan in the
reverse direction.
I.e. Starting from the last row to the first row.
Zhou
-Bryan
On Apr 28, 2008, at 7:53 PM, Zhou Wei wrote:
Hi
I want to find out the maximum value of the row id of a table.
Is there a simple and efficient way to do this without scan
through the
whole table starting from the first row?
Thanks.
Zhou
