hbase-user mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From Anoop Sam John <anoo...@huawei.com>
Subject RE: Co-Processor in scanning the HBase's Table
Date Mon, 18 Feb 2013 05:23:24 GMT
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 [mohandes.zebeleh.67@gmail.com]
Sent: Monday, February 18, 2013 10:27 AM
To: user@hbase.apache.org
Cc: cdh-user@cloudera.org
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 <anoopsj@huawei.com> 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 [mohandes.zebeleh.67@gmail.com]
> Sent: Monday, February 18, 2013 12:21 AM
> To: cdh-user@cloudera.org; user@hbase.apache.org
> 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
>
Mime
View raw message