It should, perhaps, stop once you pass the prefix. I actually thought
it did, but you and the code say otherwise. Doing the early-out with a
Get is actually not possible, so this may be why it is not implemented
as such.
However, a Scan can take both a startRow and a stopRow. So you can use
that to early-out instead.
Given that filters now work with Gets, you cannot actually implement the
early-out within the filter. You'll have to use start/stop rows. One
could argue a prefix filter may not make much sense on a Get (since you
must explicitly specify row), so if you'd like to raise that issue and
see if we could integrate an early-out in the filter, please file a JIRA.
JG
Matus Zamborsky wrote:
Hello,
I am scaning hbase a table with Scan and I am using PrefixFilter. As I
understand, it scans the whole table and run the filter on every row.
But why it does not stop after finding row without the desired prefix?
If it did not find the prefix, if should return true in
filterAllRemaining calling.
Combining this with possible specifing the start row in Scan object, one
can very fast filter only rows with the desired prefix.
I am using hbase 0.20 from trunk.
Regards
Matus Zamborsky
