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From Bharath Mundlapudi <mundlap...@gmail.com>
Subject Re: Accessing image files from hadoop to jsp
Date Wed, 12 Sep 2012 01:36:16 GMT
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 <visioner.sadak@gmail.com>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 <visioner.sadak@gmail.com>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 <visioner.sadak@gmail.com>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 <harsh@cloudera.com> 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 <
>>>> visioner.sadak@gmail.com> wrote:
>>>> > is webhdfs a viable approach???
>>>> >
>>>> >
>>>> > On Thu, Sep 6, 2012 at 8:26 PM, Visioner Sadak <
>>>> visioner.sadak@gmail.com>
>>>> > 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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