Hello again, I've used PostScannerClose Regionobserver as the hbase book (Definitive Guide) says,but it doesn't seem worked.And I noticed that the PostScannerClose doesn't return any value like result. In fact,I just wanna doing a simple job as described below: Up to now,I've used a scanner to filter the columnFamily,then on the client side ( means at the result loop), filtered some other things,now I want to do that after scanning each region to reduce the amount of return results to client.
Please help me,I need it asap. Farrokh On Tue, Feb 19, 2013 at 9:03 PM, Farrokh Shahriari < [email protected]> wrote: > Thanks you guys > > > On Mon, Feb 18, 2013 at 12:00 PM, Amit Sela <[email protected]> wrote: > >> Yes... that was emailing half asleep... :) >> >> On Mon, Feb 18, 2013 at 7:23 AM, Anoop Sam John <[email protected]> >> wrote: >> >> > We dont have any hook like postScan().. In ur case you can try with >> > postScannerClose().. This will be called once per region. When the >> scan on >> > that region is over the scanner opened on that region will get closed >> and >> > at that time this hook will get executed. >> > >> > -Anoop- >> > ________________________________________ >> > From: Farrokh Shahriari [[email protected]] >> > Sent: Monday, February 18, 2013 10:27 AM >> > To: [email protected] >> > Cc: [email protected] >> > Subject: Re: Co-Processor in scanning the HBase's Table >> > >> > Thanks you Amit,I will check that. >> > @Anoop: I wanna run that just after scanning a region or after scanning >> the >> > regions that to belong to one regionserver. >> > >> > On Mon, Feb 18, 2013 at 7:45 AM, Anoop Sam John <[email protected]> >> > wrote: >> > >> > > >I wanna use a custom code after scanning a large table and prefer to >> run >> > > the code after scanning each region >> > > >> > > Exactly at what point you want to run your custom code? We have >> hooks at >> > > points like opening a scanner at a region, closing scanner at a >> region, >> > > calling next (pre/post) etc >> > > >> > > -Anoop- >> > > ________________________________________ >> > > From: Farrokh Shahriari [[email protected]] >> > > Sent: Monday, February 18, 2013 12:21 AM >> > > To: [email protected]; [email protected] >> > > Subject: Co-Processor in scanning the HBase's Table >> > > >> > > Hi there >> > > I wanna use a custom code after scanning a large table and prefer to >> run >> > > the code after scanning each region.I know that I should use >> > > co-processor,but don't know which of Observer,Endpoint or both of >> them I >> > > should use ? Is there any simple example of them ? >> > > >> > > Tnx >> > > >> > >> > >
