Hi, is HBase able to add/load a jar to its classpath on the fly? It would be neat to have a 'hot deploy' directory, much like felix fileinstall.
Regards, Leen On Thu, Jan 14, 2010 at 4:00 PM, Paul Ambrose <[email protected]> wrote: > Yes, add it to HBASE_CLASSPATH in $HBASE_HOME/conf/hbase-env.sh > http://www.hbql.com/installation.html > > On Jan 14, 2010, at 1:39 AM, Sriram Muthuswamy Chittathoor wrote: > > > Could this be the reason as to why in HBQL something like this does not > > work > > " SELECT * FROM demo1 WITH SERVER FILTER WHERE f1:val2 > 100" > > > > Whereas "SELECT * FROM demo1 WITH CLIENT FILTER WHERE f1:val2 > 100" > > works. > > > > I need to copy hbql jar to all the machines and set it in the class path > > ? > > > > -----Original Message----- > > From: [email protected] [mailto:[email protected]] On Behalf Of > > stack > > Sent: Wednesday, January 13, 2010 11:42 PM > > To: [email protected] > > Subject: Re: Data processing/filtering on the server > > > > 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. > >> > >> > >
