Your custom code needs to be on the CLASSPATH of both server and client so it may need a restart of your servers after adding your new filter serverside. We do not yet have dynamic loading of filters implemented. There may be another issue where instead of passing class names, we pass a code -- saves on message sizes passed -- and your new class may not make it across because currently codes need to be added to the head of HbaseObjectWritable. That said there is provision for when a code does not exist, we instead send over the class name. Maybe this will work for you.
St.Ack On Wed, Jan 13, 2010 at 9:38 AM, Sriram Muthuswamy Chittathoor < [email protected]> wrote: > Thanks Edward. As an experiment I was trying to write my own filter and > use the scan.setFilter (..) method to set it. Is this even possible as I > got into issues -- started giving some region server exception. Based on > your response if the filtering is applied on the server side obviously my > local custom filter class cannot be used. Am I guessing it right ?? > > -----Original Message----- > From: Edward Capriolo [mailto:[email protected]] > Sent: Wednesday, January 13, 2010 11:00 PM > To: [email protected] > Subject: Re: Data processing/filtering on the server > > Filters are applied server side: > > > http://hadoop.apache.org/hbase/docs/current/api/org/apache/hadoop/hbase/filter/package-summary.html > > Edward > On Wed, Jan 13, 2010 at 12:28 PM, Sriram Muthuswamy Chittathoor > <[email protected]> wrote: > > Hi: > > > > I am currently using the HBase client api to fetch the data rows and > > process the rows on the client JVM. Is there a way to specify filters > > which will apply say on the region servers so that the data that is > > returned to me is a filtered set. I don't want all the data rows to > > travel on the wire from the server to the client JVM > > > > Sriram C > > > > This email is sent for and on behalf of Ivy Comptech Private Limited. Ivy > Comptech Private Limited is a limited liability company. > > > > This email and any attachments are confidential, and may be legally > privileged and protected by copyright. If you are not the intended recipient > dissemination or copying of this email is prohibited. If you have received > this in error, please notify the sender by replying by email and then delete > the email completely from your system. > > Any views or opinions are solely those of the sender. This communication > is not intended to form a binding contract on behalf of Ivy Comptech Private > Limited unless expressly indicated to the contrary and properly authorised. > Any actions taken on the basis of this email are at the recipient's own > risk. > > > > Registered office: > > Ivy Comptech Private Limited, Cyber Spazio, Road No. 2, Banjara Hills, > Hyderabad 500 033, Andhra Pradesh, India. Registered number: 37994. > Registered in India. A list of members' names is available for inspection at > the registered office. > > > > > > This email is sent for and on behalf of Ivy Comptech Private Limited. Ivy > Comptech Private Limited is a limited liability company. > > This email and any attachments are confidential, and may be legally > privileged and protected by copyright. If you are not the intended recipient > dissemination or copying of this email is prohibited. If you have received > this in error, please notify the sender by replying by email and then delete > the email completely from your system. > Any views or opinions are solely those of the sender. This communication > is not intended to form a binding contract on behalf of Ivy Comptech Private > Limited unless expressly indicated to the contrary and properly authorised. > Any actions taken on the basis of this email are at the recipient's own > risk. > > Registered office: > Ivy Comptech Private Limited, Cyber Spazio, Road No. 2, Banjara Hills, > Hyderabad 500 033, Andhra Pradesh, India. Registered number: 37994. > Registered in India. A list of members' names is available for inspection at > the registered office. > >
