Sorry, CF must not be fake, I suppose (because its region coprocessor)
put.add(REAL_COLUMN_FAMILY, "flag".getBytes(),"true".getBytes());
'flag' is the fake column. You have to process these columns in your
Coprocessor and extract them.
Best regards,
Vladimir Rodionov
Principal Platform Engineer
Carrier IQ, www.carrieriq.com
e-mail: vrodio...@carrieriq.com
________________________________________
From: Vladimir Rodionov
Sent: Thursday, August 22, 2013 10:53 AM
To: user@hbase.apache.org; hbase-u...@hadoop.apache.org
Subject: RE: passing a parameter to an observer coprocessor
Add fake cf + column to your Put operation
Put put = new Put(row);
put.addFamily("COMMAND".getBytes(), "flag".getBytes(),"true".getBytes());
Best regards,
Vladimir Rodionov
Principal Platform Engineer
Carrier IQ, www.carrieriq.com
e-mail: vrodio...@carrieriq.com
________________________________________
From: Wei Tan [w...@us.ibm.com]
Sent: Thursday, August 22, 2013 9:36 AM
To: hbase-u...@hadoop.apache.org
Subject: passing a parameter to an observer coprocessor
Hi all,
I want to add some dynamic behavior to my observer cp, say:
postPut(){
if(flag) {do function1()};
else {do function2()}
}
Is there a way to dynamically change the value of flag? One Feasible
approaches is to change a value in table descriptor, but then I need to
restart the table. Is there a way to pass a parameter using an API, say,
from an endpoint, to an observer? Another way to ask this question is, is
there a shared variable between an observer, and an endpoint, in a common
table?
Thanks,
Wei
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