Home | About | Sematext search-lucene.com search-hadoop.com
NEW: Monitor These Apps!
elasticsearch, apache solr, apache hbase, hadoop, redis, casssandra, amazon cloudwatch, mysql, memcached, apache kafka, apache zookeeper, apache storm, ubuntu, centOS, red hat, debian, puppet labs, java, senseiDB
 Search Hadoop and all its subprojects:

Switch to Threaded View
HBase >> mail # user >> Question


Copy link to this message
-
Re: Question
Take a look at
src/main/java/org/apache/hadoop/hbase/client/coprocessor/LongColumnInterpreter.java
for an example ?

Since ColumnInterpreter involves dealing with Java generics, I feel you can
try hive which doesn't require coding in Java - at least initially.

Cheers

On Wed, Nov 14, 2012 at 4:07 PM, Dalia Sobhy <[EMAIL PROTECTED]>wrote:

>
> I cannot understand you TEd ?
>
> Can you please tell me how to initialize the ColumnInterpreter instance?
>
> I am using String for diagnosis qualifier.
>
> Which is better in aggregate functions : hbase OR hive?
>
> Thanks in advance,
>
> > Subject: Re: Question
> > From: [EMAIL PROTECTED]
> > Date: Wed, 14 Nov 2012 11:09:26 +0200
> > To: [EMAIL PROTECTED]
> >
> > String
> >
> > Sent from my iPhone
> >
> > On 2012-11-14, at 12:30 AM, "Ted Yu" <[EMAIL PROTECTED]> wrote:
> >
> > > What number format did you use for the cardiac column family ?
> > > I assume you store double as byte array.
> > >
> > > Cheers
> > >
> > > On Tue, Nov 13, 2012 at 2:14 PM, Dalia Sobhy <
> [EMAIL PROTECTED]>wrote:
> > >
> > >> Hello Ted:
> > >>
> > >> I have a patient table which contains two column families: info and
> > >> cardiac.
> > >>
> > >> I need to count the number of people who suffer from a particular
> > >> diagnosis within cardiac.
> > >>
> > >> For instance the number of patients suffering from "heart failure"
> > >>
> > >> Sent from my iPad
> > >>
> > >> On Nov 13, 2012, at 11:00 PM, "Ted Yu" <[EMAIL PROTECTED]> wrote:
> > >>
> > >>> Currently http://hbase.apache.org/book.html gives me networks error.
> > >>> You should be able to find example of how Java client connects to
> HBase
> > >> cluster.
> > >>>
> > >>> How ColumnInterpreter is initialized depends on your schema. Can you
> > >> tell us more about your schema ?
> > >>>
> > >>> Thanks
> > >>>
> > >>> On Tue, Nov 13, 2012 at 12:40 PM, Dalia Sobhy <
> > >> [EMAIL PROTECTED]> wrote:
> > >>>>
> > >>>>
> > >>>>
> > >>>>
> > >>>> Begin forwarded message:
> > >>>>
> > >>>>> From: Dalia Sobhy <[EMAIL PROTECTED]>
> > >>>>> Date: November 12, 2012, 10:12:57 PM GMT+02:00
> > >>>>> To: <[EMAIL PROTECTED]>
> > >>>>> Subject: RE: Question
> > >>>>>
> > >>>>> Thanks,
> > >>>>>
> > >>>>> But how to initialize the ColumnInterpreter, I mean how to link it
> > >> with a table.
> > >>>>>
> > >>>>> Another aspect, its my first time to use java classes for hbase, I
> was
> > >> using thrift server to connect to hbase. But due to the need for
> aggregate
> > >> functions i shifted to hbase 0.92.
> > >>>>>
> > >>>>> So could you explain to me in brief how are the java classes
> connected
> > >> to hbase server.
> > >>>>>
> > >>>>> Thanks in advance :D
> > >>>>>
> > >>>>> Date: Mon, 12 Nov 2012 11:35:58 -0800
> > >>>>>
> > >>>>> Subject: Re: Question
> > >>>>> From: [EMAIL PROTECTED]
> > >>>>> To: [EMAIL PROTECTED]
> > >>>>> CC: [EMAIL PROTECTED]
> > >>>>>
> > >>>>>
> > >>>>> double is primitive type.
> > >>>>> Replace with Double.
> > >>>>>
> > >>>>> Cheers
> > >>>>>
> > >>>>> On Mon, Nov 12, 2012 at 11:31 AM, Dalia Sobhy <
> > >> [EMAIL PROTECTED]> wrote:
> > >>>>>
> > >>>>>
> > >>>>> Syntax error on token "double", Dimensions expected after this
> token
> > >>>>>
> > >>>>> Pastebin link:
> > >>>>> http://pastebin.com/dcvaMvLw
> > >>>>>
> > >>>>> I am trying to send it on the group but I dunno why hotmail
> disagrees
> > >> and sends me postmaster failure so weird!!!
> > >>>>>
> > >>>>>
> > >>>>>> CC: [EMAIL PROTECTED]
> > >>>>>> From: [EMAIL PROTECTED]
> > >>>>>> Subject: Re: Question
> > >>>>>> Date: Sun, 11 Nov 2012 12:31:16 -0800
> > >>>>>> To: [EMAIL PROTECTED]
> > >>>>>
> > >>>>>>
> > >>>>>> What error did you get ?
> > >>>>>> Please use pastebin to share.
> > >>>>>>
> > >>>>>> Thanks
> > >>>>>>
> > >>>>>>
> > >>>>>>
> > >>>>>> On Nov 11, 2012, at 11:42 AM, Dalia Sobhy <
> > >> [EMAIL PROTECTED]> wrote:
> > >>>>>>
> > >>>>
NEW: Monitor These Apps!
elasticsearch, apache solr, apache hbase, hadoop, redis, casssandra, amazon cloudwatch, mysql, memcached, apache kafka, apache zookeeper, apache storm, ubuntu, centOS, red hat, debian, puppet labs, java, senseiDB