You could use Coprocessors framework. To do that you have to implement
your own Coprocessors's module and include it to each RegionServers.
Here is an introduction article how to use Coprocessors:
https://blogs.apache.org/hbase/entry/coprocessor_introduction
--
Regards,
Alexander Ignatov
On 2/1/2013 6:57 PM, Farrokh Shahriari wrote:
Tnx for your reply,
In my case, I should scan all rows( about 1 millions to 5 millions rows) in
a table & it takes a long time. I wanna know is there any way I can do it
in parallel or not ?
On Fri, Feb 1, 2013 at 5:32 PM, Mohammad Tariq <[email protected]> wrote:
Hello Farrokh,
Scans work sequentially with one region after the other. Scans from
client side do not go to regionservers in parallel. And, for the second
question, the code will run at the client side.
Warm Regards,
Tariq
https://mtariq.jux.com/
cloudfront.blogspot.com
On Fri, Feb 1, 2013 at 7:22 PM, Farrokh Shahriari <
[email protected]> wrote:
Hi there
I have two question about scan in Hbase :
1) Does scan operation with specific filter run in parallel on different
regionservers ?
2) I wanna know whether this code runs at client side for searching the
retrieved results or not ?
for (Result result : scanner1) {
for (KeyValue kv : result.raw()) {
//
// some coeds
//
}
}
Farrokh Shahriari
