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Re: Accessing image files from hadoop to jsp
Visioner Sadak 2012-09-08, 10:18
is webhdfs a viable approach???
On Thu, Sep 6, 2012 at 8:26 PM, Visioner Sadak <[EMAIL PROTECTED]>wrote:
> I have uploaded some images to hdfs hadoop user/combo/ directory now
> want to show those images in a jsp i have configured tomcat and hadoop
> properly i m able to do uploads any ideas on how to build the interface to
> show thes images on to my front end jsp...
>
>
>
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Re: Accessing image files from hadoop to jsp
Visioner Sadak 2012-09-08, 15:00
seems like webhdfs is available on above 1.0. versions,for the time being just to do a POC cant i use hftp in 0.22.0 version i have to just show the img on a jsp sumthing like this,any ideas on how to configure hftp,security and all,fully confused coz if the url is accessible as below any WAR can access it right or we will have to do it frm admin configs... <td><img src =*"hftp://localhost:50070/Comb/java1.jpg"*/></td> On Sat, Sep 8, 2012 at 6:47 PM, Harsh J <[EMAIL PROTECTED]> wrote: > I'd say yes. Use either WebHDFS (requires client to be able to access > all HDFS nodes) or HttpFS (acts as a gateway if your client can't > access all HDFS nodes) via their REST APIs. > > On Sat, Sep 8, 2012 at 3:48 PM, Visioner Sadak <[EMAIL PROTECTED]> > wrote: > > is webhdfs a viable approach??? > > > > > > On Thu, Sep 6, 2012 at 8:26 PM, Visioner Sadak <[EMAIL PROTECTED] > > > > wrote: > >> > >> I have uploaded some images to hdfs hadoop user/combo/ directory now > >> want to show those images in a jsp i have configured tomcat and hadoop > >> properly i m able to do uploads any ideas on how to build the > interface to > >> show thes images on to my front end jsp... > >> > >> > > > > > > > > -- > Harsh J >
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Re: Accessing image files from hadoop to jsp
Visioner Sadak 2012-09-10, 08:28
or shud i use datanode ip for accessing images using hftp <td><img src ="hftp://localhost:50075/Comb/java1.jpg"/></td> my datanode is at 50075 On Sat, Sep 8, 2012 at 8:30 PM, Visioner Sadak <[EMAIL PROTECTED]>wrote: > seems like webhdfs is available on above 1.0. versions,for the time being > just to do a POC cant i use hftp in 0.22.0 version > i have to just show the img on a jsp sumthing like this,any ideas on how > to configure hftp,security and all,fully confused coz if the url is > accessible as below any WAR can access it right or we will have to do it > frm admin configs... > > > < > td><img src =*"hftp://localhost:50070/Comb/java1.jpg"*/></td> > > On Sat, Sep 8, 2012 at 6:47 PM, Harsh J <[EMAIL PROTECTED]> wrote: > >> I'd say yes. Use either WebHDFS (requires client to be able to access >> all HDFS nodes) or HttpFS (acts as a gateway if your client can't >> access all HDFS nodes) via their REST APIs. >> >> On Sat, Sep 8, 2012 at 3:48 PM, Visioner Sadak <[EMAIL PROTECTED]> >> wrote: >> > is webhdfs a viable approach??? >> > >> > >> > On Thu, Sep 6, 2012 at 8:26 PM, Visioner Sadak < >> [EMAIL PROTECTED]> >> > wrote: >> >> >> >> I have uploaded some images to hdfs hadoop user/combo/ directory >> now >> >> want to show those images in a jsp i have configured tomcat and hadoop >> >> properly i m able to do uploads any ideas on how to build the >> interface to >> >> show thes images on to my front end jsp... >> >> >> >> >> > >> > >> >> >> >> -- >> Harsh J >> > >
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Re: Accessing image files from hadoop to jsp
Visioner Sadak 2012-09-11, 20:48
any hints experts atleast if i m on the right track or we cant use hftp at all coz the browser wont understand it????? On Mon, Sep 10, 2012 at 1:58 PM, Visioner Sadak <[EMAIL PROTECTED]>wrote: > or shud i use datanode ip for accessing images using hftp > > <td><img src ="hftp://localhost:50075/Comb/java1.jpg"/></td> > > my datanode is at 50075 > > > On Sat, Sep 8, 2012 at 8:30 PM, Visioner Sadak <[EMAIL PROTECTED]>wrote: > >> seems like webhdfs is available on above 1.0. versions,for the time being >> just to do a POC cant i use hftp in 0.22.0 version >> i have to just show the img on a jsp sumthing like this,any ideas on how >> to configure hftp,security and all,fully confused coz if the url is >> accessible as below any WAR can access it right or we will have to do it >> frm admin configs... >> >> >> < >> td><img src =*"hftp://localhost:50070/Comb/java1.jpg"*/></td> >> >> On Sat, Sep 8, 2012 at 6:47 PM, Harsh J <[EMAIL PROTECTED]> wrote: >> >>> I'd say yes. Use either WebHDFS (requires client to be able to access >>> all HDFS nodes) or HttpFS (acts as a gateway if your client can't >>> access all HDFS nodes) via their REST APIs. >>> >>> On Sat, Sep 8, 2012 at 3:48 PM, Visioner Sadak <[EMAIL PROTECTED]> >>> wrote: >>> > is webhdfs a viable approach??? >>> > >>> > >>> > On Thu, Sep 6, 2012 at 8:26 PM, Visioner Sadak < >>> [EMAIL PROTECTED]> >>> > wrote: >>> >> >>> >> I have uploaded some images to hdfs hadoop user/combo/ directory >>> now >>> >> want to show those images in a jsp i have configured tomcat and hadoop >>> >> properly i m able to do uploads any ideas on how to build the >>> interface to >>> >> show thes images on to my front end jsp... >>> >> >>> >> >>> > >>> > >>> >>> >>> >>> -- >>> Harsh J >>> >> >> >
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Re: Accessing image files from hadoop to jsp
Arpit Gupta 2012-09-11, 21:00
your browser does not know what an hftp file system is so it wont work. If you use WebHDFS it has rest api's that you can use to read data from hdfs. I would suggest look at those and try them out. http://hadoop.apache.org/docs/stable/webhdfs.html-- Arpit Gupta Hortonworks Inc. http://hortonworks.com/On Sep 11, 2012, at 1:48 PM, Visioner Sadak <[EMAIL PROTECTED]> wrote: > any hints experts atleast if i m on the right track or we cant use hftp at all coz the browser wont understand it????? > > On Mon, Sep 10, 2012 at 1:58 PM, Visioner Sadak <[EMAIL PROTECTED]> wrote: > or shud i use datanode ip for accessing images using hftp > > <td><img src ="hftp://localhost:50075/Comb/java1.jpg"/></td> > > my datanode is at 50075 > > > On Sat, Sep 8, 2012 at 8:30 PM, Visioner Sadak <[EMAIL PROTECTED]> wrote: > seems like webhdfs is available on above 1.0. versions,for the time being just to do a POC cant i use hftp in 0.22.0 version > i have to just show the img on a jsp sumthing like this,any ideas on how to configure hftp,security and all,fully confused coz if the url is accessible as below any WAR can access it right or we will have to do it frm admin configs... > > < > > td><img src ="hftp://localhost:50070/Comb/java1.jpg"/></td> > > On Sat, Sep 8, 2012 at 6:47 PM, Harsh J <[EMAIL PROTECTED]> wrote: > I'd say yes. Use either WebHDFS (requires client to be able to access > all HDFS nodes) or HttpFS (acts as a gateway if your client can't > access all HDFS nodes) via their REST APIs. > > On Sat, Sep 8, 2012 at 3:48 PM, Visioner Sadak <[EMAIL PROTECTED]> wrote: > > is webhdfs a viable approach??? > > > > > > On Thu, Sep 6, 2012 at 8:26 PM, Visioner Sadak <[EMAIL PROTECTED]> > > wrote: > >> > >> I have uploaded some images to hdfs hadoop user/combo/ directory now > >> want to show those images in a jsp i have configured tomcat and hadoop > >> properly i m able to do uploads any ideas on how to build the interface to > >> show thes images on to my front end jsp... > >> > >> > > > > > > > > -- > Harsh J > > >
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Re: Accessing image files from hadoop to jsp
Bharath Mundlapudi 2012-09-12, 01:36
You should never expose internal host names in the Javascript/HTML. The flow can be Browser --> Tomcat --(REST, HDFS Client)--> HDFS Your web app can make REST requests to HDFS and you could use JAX-RS impl for REST talk in your web app. I must warn that user experience will suffer by any of these approaches. You need some sort of caching solution on top of these proposals. -Bharath On Tue, Sep 11, 2012 at 1:48 PM, Visioner Sadak <[EMAIL PROTECTED]>wrote: > any hints experts atleast if i m on the right track or we cant use hftp at > all coz the browser wont understand it????? > > > On Mon, Sep 10, 2012 at 1:58 PM, Visioner Sadak <[EMAIL PROTECTED]>wrote: > >> or shud i use datanode ip for accessing images using hftp >> >> <td><img src ="hftp://localhost:50075/Comb/java1.jpg"/></td> >> >> my datanode is at 50075 >> >> >> On Sat, Sep 8, 2012 at 8:30 PM, Visioner Sadak <[EMAIL PROTECTED]>wrote: >> >>> seems like webhdfs is available on above 1.0. versions,for the time >>> being just to do a POC cant i use hftp in 0.22.0 version >>> i have to just show the img on a jsp sumthing like this,any ideas on how >>> to configure hftp,security and all,fully confused coz if the url is >>> accessible as below any WAR can access it right or we will have to do it >>> frm admin configs... >>> >>> >>> < >>> td><img src =*"hftp://localhost:50070/Comb/java1.jpg"*/></td> >>> >>> On Sat, Sep 8, 2012 at 6:47 PM, Harsh J <[EMAIL PROTECTED]> wrote: >>> >>>> I'd say yes. Use either WebHDFS (requires client to be able to access >>>> all HDFS nodes) or HttpFS (acts as a gateway if your client can't >>>> access all HDFS nodes) via their REST APIs. >>>> >>>> On Sat, Sep 8, 2012 at 3:48 PM, Visioner Sadak < >>>> [EMAIL PROTECTED]> wrote: >>>> > is webhdfs a viable approach??? >>>> > >>>> > >>>> > On Thu, Sep 6, 2012 at 8:26 PM, Visioner Sadak < >>>> [EMAIL PROTECTED]> >>>> > wrote: >>>> >> >>>> >> I have uploaded some images to hdfs hadoop user/combo/ directory >>>> now >>>> >> want to show those images in a jsp i have configured tomcat and >>>> hadoop >>>> >> properly i m able to do uploads any ideas on how to build the >>>> interface to >>>> >> show thes images on to my front end jsp... >>>> >> >>>> >> >>>> > >>>> > >>>> >>>> >>>> >>>> -- >>>> Harsh J >>>> >>> >>> >> >
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Re: Accessing image files from hadoop to jsp
Michael Segel 2012-09-12, 02:59
Here's one... Write a Java program which can be accessed on the server side to pull the picture from HDFS and display it on your JSP. On Sep 11, 2012, at 3:48 PM, Visioner Sadak <[EMAIL PROTECTED]> wrote: > any hints experts atleast if i m on the right track or we cant use hftp at all coz the browser wont understand it????? > > On Mon, Sep 10, 2012 at 1:58 PM, Visioner Sadak <[EMAIL PROTECTED]> wrote: > or shud i use datanode ip for accessing images using hftp > > <td><img src ="hftp://localhost:50075/Comb/java1.jpg"/></td> > > my datanode is at 50075 > > > On Sat, Sep 8, 2012 at 8:30 PM, Visioner Sadak <[EMAIL PROTECTED]> wrote: > seems like webhdfs is available on above 1.0. versions,for the time being just to do a POC cant i use hftp in 0.22.0 version > i have to just show the img on a jsp sumthing like this,any ideas on how to configure hftp,security and all,fully confused coz if the url is accessible as below any WAR can access it right or we will have to do it frm admin configs... > > < > > td><img src ="hftp://localhost:50070/Comb/java1.jpg"/></td> > > On Sat, Sep 8, 2012 at 6:47 PM, Harsh J <[EMAIL PROTECTED]> wrote: > I'd say yes. Use either WebHDFS (requires client to be able to access > all HDFS nodes) or HttpFS (acts as a gateway if your client can't > access all HDFS nodes) via their REST APIs. > > On Sat, Sep 8, 2012 at 3:48 PM, Visioner Sadak <[EMAIL PROTECTED]> wrote: > > is webhdfs a viable approach??? > > > > > > On Thu, Sep 6, 2012 at 8:26 PM, Visioner Sadak <[EMAIL PROTECTED]> > > wrote: > >> > >> I have uploaded some images to hdfs hadoop user/combo/ directory now > >> want to show those images in a jsp i have configured tomcat and hadoop > >> properly i m able to do uploads any ideas on how to build the interface to > >> show thes images on to my front end jsp... > >> > >> > > > > > > > > -- > Harsh J > > >
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Re: Accessing image files from hadoop to jsp
Visioner Sadak 2012-09-12, 06:54
Thanks a ton guys for showing the right direction.... i was so wrong with hftp, will try out web hdfs,is hdfs FUSE mount a good approach by using that i will have to just mount my existing local java uploads in to hdfs but can i access Har files using this or will i have to create a symlink for acessing HAR's... On Wed, Sep 12, 2012 at 8:29 AM, Michael Segel <[EMAIL PROTECTED]>wrote: > Here's one... > Write a Java program which can be accessed on the server side to pull the > picture from HDFS and display it on your JSP. > > > > On Sep 11, 2012, at 3:48 PM, Visioner Sadak <[EMAIL PROTECTED]> > wrote: > > any hints experts atleast if i m on the right track or we cant use hftp at > all coz the browser wont understand it????? > > On Mon, Sep 10, 2012 at 1:58 PM, Visioner Sadak <[EMAIL PROTECTED]>wrote: > >> or shud i use datanode ip for accessing images using hftp >> >> <td><img src ="hftp://localhost:50075/Comb/java1.jpg"/></td> >> >> my datanode is at 50075 >> >> >> On Sat, Sep 8, 2012 at 8:30 PM, Visioner Sadak <[EMAIL PROTECTED]>wrote: >> >>> seems like webhdfs is available on above 1.0. versions,for the time >>> being just to do a POC cant i use hftp in 0.22.0 version >>> i have to just show the img on a jsp sumthing like this,any ideas on how >>> to configure hftp,security and all,fully confused coz if the url is >>> accessible as below any WAR can access it right or we will have to do it >>> frm admin configs... >>> >>> >>> < >>> td><img src =*"hftp://localhost:50070/Comb/java1.jpg"*/></td> >>> >>> On Sat, Sep 8, 2012 at 6:47 PM, Harsh J <[EMAIL PROTECTED]> wrote: >>> >>>> I'd say yes. Use either WebHDFS (requires client to be able to access >>>> all HDFS nodes) or HttpFS (acts as a gateway if your client can't >>>> access all HDFS nodes) via their REST APIs. >>>> >>>> On Sat, Sep 8, 2012 at 3:48 PM, Visioner Sadak < >>>> [EMAIL PROTECTED]> wrote: >>>> > is webhdfs a viable approach??? >>>> > >>>> > >>>> > On Thu, Sep 6, 2012 at 8:26 PM, Visioner Sadak < >>>> [EMAIL PROTECTED]> >>>> > wrote: >>>> >> >>>> >> I have uploaded some images to hdfs hadoop user/combo/ directory >>>> now >>>> >> want to show those images in a jsp i have configured tomcat and >>>> hadoop >>>> >> properly i m able to do uploads any ideas on how to build the >>>> interface to >>>> >> show thes images on to my front end jsp... >>>> >> >>>> >> >>>> > >>>> > >>>> >>>> >>>> >>>> -- >>>> Harsh J >>>> >>> >>> >> > >
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