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Posted to mapreduce-user@hadoop.apache.org by Mohammad Mustaqeem <3m...@gmail.com> on 2013/05/31 08:44:34 UTC

How can we download a file using WebHDFS REST API

Is there any way to download a file from HDFS using WebHDFS REST API?
I have read -
http://hadoop.apache.org/docs/r2.0.3-alpha/hadoop-project-dist/hadoop-hdfs/WebHDFS.html

But didn't find any way to download file.

-- 
*With regards ---*
*Mohammad Mustaqeem*,
M.Tech (CSE)
MNNIT Allahabad
9026604270

Re: How can we download a file using WebHDFS REST API

Posted by Mohammad Tariq <do...@gmail.com>.
Hello Mustaqeem,

          I don't think this is possible through webHDFS, as others have
said. But you could use wget(courtesy Datanode API) to download the file.
Something like this :

wget http://datanode:50075/streamFile/path_of_the_file

Please note that you need to issue this command on the DN machine.

HTH

Warm Regards,
Tariq
cloudfront.blogspot.com


On Fri, May 31, 2013 at 10:39 PM, Adam Faris <af...@linkedin.com> wrote:

> As others have suggested, you need to call "&op=OPEN" and save the
> contents into a buffer which you then write to disk.    You can do this
> with curl by using '-o /my/local/file.txt' in your curl statement.
>
> -- Adam
>
> On May 31, 2013, at 10:05 AM, Arpit Gupta <ar...@hortonworks.com>
>  wrote:
>
> > There is no api to download a file. The client you are using to make
> these calls will have to read the contents of the file and save it on your
> local file system.
> >
> > --
> > Arpit Gupta
> > Hortonworks Inc.
> > http://hortonworks.com/
> >
> > On May 31, 2013, at 9:56 AM, Mohammad Mustaqeem <3m...@gmail.com>
> wrote:
> >
> >> This is for reading the content of the file not to download..
> >> I want to download file.
> >>
> >>
> >> On Fri, May 31, 2013 at 10:23 PM, Arpit Gupta <ar...@hortonworks.com>
> wrote:
> >> you will have to use the open operation to read the file and save it.
> >>
> >>
> http://hadoop.apache.org/docs/r2.0.3-alpha/hadoop-project-dist/hadoop-hdfs/WebHDFS.html#Open_and_Read_a_File
> >>
> >> --
> >> Arpit Gupta
> >> Hortonworks Inc.
> >> http://hortonworks.com/
> >>
> >> On May 30, 2013, at 11:44 PM, Mohammad Mustaqeem <
> 3m.mustaqeem@gmail.com> wrote:
> >>
> >>> Is there any way to download a file from HDFS using WebHDFS REST API?
> >>> I have read -
> http://hadoop.apache.org/docs/r2.0.3-alpha/hadoop-project-dist/hadoop-hdfs/WebHDFS.html
> >>>
> >>> But didn't find any way to download file.
> >>>
> >>> --
> >>> With regards ---
> >>> Mohammad Mustaqeem,
> >>> M.Tech (CSE)
> >>> MNNIT Allahabad
> >>> 9026604270
> >>>
> >>>
> >>
> >>
> >>
> >>
> >> --
> >> With regards ---
> >> Mohammad Mustaqeem,
> >> M.Tech (CSE)
> >> MNNIT Allahabad
> >> 9026604270
> >>
> >>
> >
>
>

Re: How can we download a file using WebHDFS REST API

Posted by Mohammad Tariq <do...@gmail.com>.
Hello Mustaqeem,

          I don't think this is possible through webHDFS, as others have
said. But you could use wget(courtesy Datanode API) to download the file.
Something like this :

wget http://datanode:50075/streamFile/path_of_the_file

Please note that you need to issue this command on the DN machine.

HTH

Warm Regards,
Tariq
cloudfront.blogspot.com


On Fri, May 31, 2013 at 10:39 PM, Adam Faris <af...@linkedin.com> wrote:

> As others have suggested, you need to call "&op=OPEN" and save the
> contents into a buffer which you then write to disk.    You can do this
> with curl by using '-o /my/local/file.txt' in your curl statement.
>
> -- Adam
>
> On May 31, 2013, at 10:05 AM, Arpit Gupta <ar...@hortonworks.com>
>  wrote:
>
> > There is no api to download a file. The client you are using to make
> these calls will have to read the contents of the file and save it on your
> local file system.
> >
> > --
> > Arpit Gupta
> > Hortonworks Inc.
> > http://hortonworks.com/
> >
> > On May 31, 2013, at 9:56 AM, Mohammad Mustaqeem <3m...@gmail.com>
> wrote:
> >
> >> This is for reading the content of the file not to download..
> >> I want to download file.
> >>
> >>
> >> On Fri, May 31, 2013 at 10:23 PM, Arpit Gupta <ar...@hortonworks.com>
> wrote:
> >> you will have to use the open operation to read the file and save it.
> >>
> >>
> http://hadoop.apache.org/docs/r2.0.3-alpha/hadoop-project-dist/hadoop-hdfs/WebHDFS.html#Open_and_Read_a_File
> >>
> >> --
> >> Arpit Gupta
> >> Hortonworks Inc.
> >> http://hortonworks.com/
> >>
> >> On May 30, 2013, at 11:44 PM, Mohammad Mustaqeem <
> 3m.mustaqeem@gmail.com> wrote:
> >>
> >>> Is there any way to download a file from HDFS using WebHDFS REST API?
> >>> I have read -
> http://hadoop.apache.org/docs/r2.0.3-alpha/hadoop-project-dist/hadoop-hdfs/WebHDFS.html
> >>>
> >>> But didn't find any way to download file.
> >>>
> >>> --
> >>> With regards ---
> >>> Mohammad Mustaqeem,
> >>> M.Tech (CSE)
> >>> MNNIT Allahabad
> >>> 9026604270
> >>>
> >>>
> >>
> >>
> >>
> >>
> >> --
> >> With regards ---
> >> Mohammad Mustaqeem,
> >> M.Tech (CSE)
> >> MNNIT Allahabad
> >> 9026604270
> >>
> >>
> >
>
>

Re: How can we download a file using WebHDFS REST API

Posted by Mohammad Tariq <do...@gmail.com>.
Hello Mustaqeem,

          I don't think this is possible through webHDFS, as others have
said. But you could use wget(courtesy Datanode API) to download the file.
Something like this :

wget http://datanode:50075/streamFile/path_of_the_file

Please note that you need to issue this command on the DN machine.

HTH

Warm Regards,
Tariq
cloudfront.blogspot.com


On Fri, May 31, 2013 at 10:39 PM, Adam Faris <af...@linkedin.com> wrote:

> As others have suggested, you need to call "&op=OPEN" and save the
> contents into a buffer which you then write to disk.    You can do this
> with curl by using '-o /my/local/file.txt' in your curl statement.
>
> -- Adam
>
> On May 31, 2013, at 10:05 AM, Arpit Gupta <ar...@hortonworks.com>
>  wrote:
>
> > There is no api to download a file. The client you are using to make
> these calls will have to read the contents of the file and save it on your
> local file system.
> >
> > --
> > Arpit Gupta
> > Hortonworks Inc.
> > http://hortonworks.com/
> >
> > On May 31, 2013, at 9:56 AM, Mohammad Mustaqeem <3m...@gmail.com>
> wrote:
> >
> >> This is for reading the content of the file not to download..
> >> I want to download file.
> >>
> >>
> >> On Fri, May 31, 2013 at 10:23 PM, Arpit Gupta <ar...@hortonworks.com>
> wrote:
> >> you will have to use the open operation to read the file and save it.
> >>
> >>
> http://hadoop.apache.org/docs/r2.0.3-alpha/hadoop-project-dist/hadoop-hdfs/WebHDFS.html#Open_and_Read_a_File
> >>
> >> --
> >> Arpit Gupta
> >> Hortonworks Inc.
> >> http://hortonworks.com/
> >>
> >> On May 30, 2013, at 11:44 PM, Mohammad Mustaqeem <
> 3m.mustaqeem@gmail.com> wrote:
> >>
> >>> Is there any way to download a file from HDFS using WebHDFS REST API?
> >>> I have read -
> http://hadoop.apache.org/docs/r2.0.3-alpha/hadoop-project-dist/hadoop-hdfs/WebHDFS.html
> >>>
> >>> But didn't find any way to download file.
> >>>
> >>> --
> >>> With regards ---
> >>> Mohammad Mustaqeem,
> >>> M.Tech (CSE)
> >>> MNNIT Allahabad
> >>> 9026604270
> >>>
> >>>
> >>
> >>
> >>
> >>
> >> --
> >> With regards ---
> >> Mohammad Mustaqeem,
> >> M.Tech (CSE)
> >> MNNIT Allahabad
> >> 9026604270
> >>
> >>
> >
>
>

Re: How can we download a file using WebHDFS REST API

Posted by Mohammad Tariq <do...@gmail.com>.
Hello Mustaqeem,

          I don't think this is possible through webHDFS, as others have
said. But you could use wget(courtesy Datanode API) to download the file.
Something like this :

wget http://datanode:50075/streamFile/path_of_the_file

Please note that you need to issue this command on the DN machine.

HTH

Warm Regards,
Tariq
cloudfront.blogspot.com


On Fri, May 31, 2013 at 10:39 PM, Adam Faris <af...@linkedin.com> wrote:

> As others have suggested, you need to call "&op=OPEN" and save the
> contents into a buffer which you then write to disk.    You can do this
> with curl by using '-o /my/local/file.txt' in your curl statement.
>
> -- Adam
>
> On May 31, 2013, at 10:05 AM, Arpit Gupta <ar...@hortonworks.com>
>  wrote:
>
> > There is no api to download a file. The client you are using to make
> these calls will have to read the contents of the file and save it on your
> local file system.
> >
> > --
> > Arpit Gupta
> > Hortonworks Inc.
> > http://hortonworks.com/
> >
> > On May 31, 2013, at 9:56 AM, Mohammad Mustaqeem <3m...@gmail.com>
> wrote:
> >
> >> This is for reading the content of the file not to download..
> >> I want to download file.
> >>
> >>
> >> On Fri, May 31, 2013 at 10:23 PM, Arpit Gupta <ar...@hortonworks.com>
> wrote:
> >> you will have to use the open operation to read the file and save it.
> >>
> >>
> http://hadoop.apache.org/docs/r2.0.3-alpha/hadoop-project-dist/hadoop-hdfs/WebHDFS.html#Open_and_Read_a_File
> >>
> >> --
> >> Arpit Gupta
> >> Hortonworks Inc.
> >> http://hortonworks.com/
> >>
> >> On May 30, 2013, at 11:44 PM, Mohammad Mustaqeem <
> 3m.mustaqeem@gmail.com> wrote:
> >>
> >>> Is there any way to download a file from HDFS using WebHDFS REST API?
> >>> I have read -
> http://hadoop.apache.org/docs/r2.0.3-alpha/hadoop-project-dist/hadoop-hdfs/WebHDFS.html
> >>>
> >>> But didn't find any way to download file.
> >>>
> >>> --
> >>> With regards ---
> >>> Mohammad Mustaqeem,
> >>> M.Tech (CSE)
> >>> MNNIT Allahabad
> >>> 9026604270
> >>>
> >>>
> >>
> >>
> >>
> >>
> >> --
> >> With regards ---
> >> Mohammad Mustaqeem,
> >> M.Tech (CSE)
> >> MNNIT Allahabad
> >> 9026604270
> >>
> >>
> >
>
>

Re: How can we download a file using WebHDFS REST API

Posted by Adam Faris <af...@linkedin.com>.
As others have suggested, you need to call "&op=OPEN" and save the contents into a buffer which you then write to disk.    You can do this with curl by using '-o /my/local/file.txt' in your curl statement.

-- Adam

On May 31, 2013, at 10:05 AM, Arpit Gupta <ar...@hortonworks.com>
 wrote:

> There is no api to download a file. The client you are using to make these calls will have to read the contents of the file and save it on your local file system.
> 
> --
> Arpit Gupta
> Hortonworks Inc.
> http://hortonworks.com/
> 
> On May 31, 2013, at 9:56 AM, Mohammad Mustaqeem <3m...@gmail.com> wrote:
> 
>> This is for reading the content of the file not to download..
>> I want to download file.
>> 
>> 
>> On Fri, May 31, 2013 at 10:23 PM, Arpit Gupta <ar...@hortonworks.com> wrote:
>> you will have to use the open operation to read the file and save it.
>> 
>> http://hadoop.apache.org/docs/r2.0.3-alpha/hadoop-project-dist/hadoop-hdfs/WebHDFS.html#Open_and_Read_a_File
>> 
>> --
>> Arpit Gupta
>> Hortonworks Inc.
>> http://hortonworks.com/
>> 
>> On May 30, 2013, at 11:44 PM, Mohammad Mustaqeem <3m...@gmail.com> wrote:
>> 
>>> Is there any way to download a file from HDFS using WebHDFS REST API?
>>> I have read - http://hadoop.apache.org/docs/r2.0.3-alpha/hadoop-project-dist/hadoop-hdfs/WebHDFS.html
>>> 
>>> But didn't find any way to download file.
>>> 
>>> -- 
>>> With regards ---
>>> Mohammad Mustaqeem,
>>> M.Tech (CSE)
>>> MNNIT Allahabad
>>> 9026604270
>>> 
>>> 
>> 
>> 
>> 
>> 
>> -- 
>> With regards ---
>> Mohammad Mustaqeem,
>> M.Tech (CSE)
>> MNNIT Allahabad
>> 9026604270
>> 
>> 
> 


Re: How can we download a file using WebHDFS REST API

Posted by Adam Faris <af...@linkedin.com>.
As others have suggested, you need to call "&op=OPEN" and save the contents into a buffer which you then write to disk.    You can do this with curl by using '-o /my/local/file.txt' in your curl statement.

-- Adam

On May 31, 2013, at 10:05 AM, Arpit Gupta <ar...@hortonworks.com>
 wrote:

> There is no api to download a file. The client you are using to make these calls will have to read the contents of the file and save it on your local file system.
> 
> --
> Arpit Gupta
> Hortonworks Inc.
> http://hortonworks.com/
> 
> On May 31, 2013, at 9:56 AM, Mohammad Mustaqeem <3m...@gmail.com> wrote:
> 
>> This is for reading the content of the file not to download..
>> I want to download file.
>> 
>> 
>> On Fri, May 31, 2013 at 10:23 PM, Arpit Gupta <ar...@hortonworks.com> wrote:
>> you will have to use the open operation to read the file and save it.
>> 
>> http://hadoop.apache.org/docs/r2.0.3-alpha/hadoop-project-dist/hadoop-hdfs/WebHDFS.html#Open_and_Read_a_File
>> 
>> --
>> Arpit Gupta
>> Hortonworks Inc.
>> http://hortonworks.com/
>> 
>> On May 30, 2013, at 11:44 PM, Mohammad Mustaqeem <3m...@gmail.com> wrote:
>> 
>>> Is there any way to download a file from HDFS using WebHDFS REST API?
>>> I have read - http://hadoop.apache.org/docs/r2.0.3-alpha/hadoop-project-dist/hadoop-hdfs/WebHDFS.html
>>> 
>>> But didn't find any way to download file.
>>> 
>>> -- 
>>> With regards ---
>>> Mohammad Mustaqeem,
>>> M.Tech (CSE)
>>> MNNIT Allahabad
>>> 9026604270
>>> 
>>> 
>> 
>> 
>> 
>> 
>> -- 
>> With regards ---
>> Mohammad Mustaqeem,
>> M.Tech (CSE)
>> MNNIT Allahabad
>> 9026604270
>> 
>> 
> 


Re: How can we download a file using WebHDFS REST API

Posted by Adam Faris <af...@linkedin.com>.
As others have suggested, you need to call "&op=OPEN" and save the contents into a buffer which you then write to disk.    You can do this with curl by using '-o /my/local/file.txt' in your curl statement.

-- Adam

On May 31, 2013, at 10:05 AM, Arpit Gupta <ar...@hortonworks.com>
 wrote:

> There is no api to download a file. The client you are using to make these calls will have to read the contents of the file and save it on your local file system.
> 
> --
> Arpit Gupta
> Hortonworks Inc.
> http://hortonworks.com/
> 
> On May 31, 2013, at 9:56 AM, Mohammad Mustaqeem <3m...@gmail.com> wrote:
> 
>> This is for reading the content of the file not to download..
>> I want to download file.
>> 
>> 
>> On Fri, May 31, 2013 at 10:23 PM, Arpit Gupta <ar...@hortonworks.com> wrote:
>> you will have to use the open operation to read the file and save it.
>> 
>> http://hadoop.apache.org/docs/r2.0.3-alpha/hadoop-project-dist/hadoop-hdfs/WebHDFS.html#Open_and_Read_a_File
>> 
>> --
>> Arpit Gupta
>> Hortonworks Inc.
>> http://hortonworks.com/
>> 
>> On May 30, 2013, at 11:44 PM, Mohammad Mustaqeem <3m...@gmail.com> wrote:
>> 
>>> Is there any way to download a file from HDFS using WebHDFS REST API?
>>> I have read - http://hadoop.apache.org/docs/r2.0.3-alpha/hadoop-project-dist/hadoop-hdfs/WebHDFS.html
>>> 
>>> But didn't find any way to download file.
>>> 
>>> -- 
>>> With regards ---
>>> Mohammad Mustaqeem,
>>> M.Tech (CSE)
>>> MNNIT Allahabad
>>> 9026604270
>>> 
>>> 
>> 
>> 
>> 
>> 
>> -- 
>> With regards ---
>> Mohammad Mustaqeem,
>> M.Tech (CSE)
>> MNNIT Allahabad
>> 9026604270
>> 
>> 
> 


Re: How can we download a file using WebHDFS REST API

Posted by Adam Faris <af...@linkedin.com>.
As others have suggested, you need to call "&op=OPEN" and save the contents into a buffer which you then write to disk.    You can do this with curl by using '-o /my/local/file.txt' in your curl statement.

-- Adam

On May 31, 2013, at 10:05 AM, Arpit Gupta <ar...@hortonworks.com>
 wrote:

> There is no api to download a file. The client you are using to make these calls will have to read the contents of the file and save it on your local file system.
> 
> --
> Arpit Gupta
> Hortonworks Inc.
> http://hortonworks.com/
> 
> On May 31, 2013, at 9:56 AM, Mohammad Mustaqeem <3m...@gmail.com> wrote:
> 
>> This is for reading the content of the file not to download..
>> I want to download file.
>> 
>> 
>> On Fri, May 31, 2013 at 10:23 PM, Arpit Gupta <ar...@hortonworks.com> wrote:
>> you will have to use the open operation to read the file and save it.
>> 
>> http://hadoop.apache.org/docs/r2.0.3-alpha/hadoop-project-dist/hadoop-hdfs/WebHDFS.html#Open_and_Read_a_File
>> 
>> --
>> Arpit Gupta
>> Hortonworks Inc.
>> http://hortonworks.com/
>> 
>> On May 30, 2013, at 11:44 PM, Mohammad Mustaqeem <3m...@gmail.com> wrote:
>> 
>>> Is there any way to download a file from HDFS using WebHDFS REST API?
>>> I have read - http://hadoop.apache.org/docs/r2.0.3-alpha/hadoop-project-dist/hadoop-hdfs/WebHDFS.html
>>> 
>>> But didn't find any way to download file.
>>> 
>>> -- 
>>> With regards ---
>>> Mohammad Mustaqeem,
>>> M.Tech (CSE)
>>> MNNIT Allahabad
>>> 9026604270
>>> 
>>> 
>> 
>> 
>> 
>> 
>> -- 
>> With regards ---
>> Mohammad Mustaqeem,
>> M.Tech (CSE)
>> MNNIT Allahabad
>> 9026604270
>> 
>> 
> 


Re: How can we download a file using WebHDFS REST API

Posted by Arpit Gupta <ar...@hortonworks.com>.
There is no api to download a file. The client you are using to make these calls will have to read the contents of the file and save it on your local file system.

--
Arpit Gupta
Hortonworks Inc.
http://hortonworks.com/

On May 31, 2013, at 9:56 AM, Mohammad Mustaqeem <3m...@gmail.com> wrote:

> This is for reading the content of the file not to download..
> I want to download file.
> 
> 
> On Fri, May 31, 2013 at 10:23 PM, Arpit Gupta <ar...@hortonworks.com> wrote:
> you will have to use the open operation to read the file and save it.
> 
> http://hadoop.apache.org/docs/r2.0.3-alpha/hadoop-project-dist/hadoop-hdfs/WebHDFS.html#Open_and_Read_a_File
> 
> --
> Arpit Gupta
> Hortonworks Inc.
> http://hortonworks.com/
> 
> On May 30, 2013, at 11:44 PM, Mohammad Mustaqeem <3m...@gmail.com> wrote:
> 
>> Is there any way to download a file from HDFS using WebHDFS REST API?
>> I have read - http://hadoop.apache.org/docs/r2.0.3-alpha/hadoop-project-dist/hadoop-hdfs/WebHDFS.html
>> 
>> But didn't find any way to download file.
>> 
>> -- 
>> With regards ---
>> Mohammad Mustaqeem,
>> M.Tech (CSE)
>> MNNIT Allahabad
>> 9026604270
>> 
>> 
> 
> 
> 
> 
> -- 
> With regards ---
> Mohammad Mustaqeem,
> M.Tech (CSE)
> MNNIT Allahabad
> 9026604270
> 
> 


Re: How can we download a file using WebHDFS REST API

Posted by Arpit Gupta <ar...@hortonworks.com>.
There is no api to download a file. The client you are using to make these calls will have to read the contents of the file and save it on your local file system.

--
Arpit Gupta
Hortonworks Inc.
http://hortonworks.com/

On May 31, 2013, at 9:56 AM, Mohammad Mustaqeem <3m...@gmail.com> wrote:

> This is for reading the content of the file not to download..
> I want to download file.
> 
> 
> On Fri, May 31, 2013 at 10:23 PM, Arpit Gupta <ar...@hortonworks.com> wrote:
> you will have to use the open operation to read the file and save it.
> 
> http://hadoop.apache.org/docs/r2.0.3-alpha/hadoop-project-dist/hadoop-hdfs/WebHDFS.html#Open_and_Read_a_File
> 
> --
> Arpit Gupta
> Hortonworks Inc.
> http://hortonworks.com/
> 
> On May 30, 2013, at 11:44 PM, Mohammad Mustaqeem <3m...@gmail.com> wrote:
> 
>> Is there any way to download a file from HDFS using WebHDFS REST API?
>> I have read - http://hadoop.apache.org/docs/r2.0.3-alpha/hadoop-project-dist/hadoop-hdfs/WebHDFS.html
>> 
>> But didn't find any way to download file.
>> 
>> -- 
>> With regards ---
>> Mohammad Mustaqeem,
>> M.Tech (CSE)
>> MNNIT Allahabad
>> 9026604270
>> 
>> 
> 
> 
> 
> 
> -- 
> With regards ---
> Mohammad Mustaqeem,
> M.Tech (CSE)
> MNNIT Allahabad
> 9026604270
> 
> 


Re: How can we download a file using WebHDFS REST API

Posted by Arpit Gupta <ar...@hortonworks.com>.
There is no api to download a file. The client you are using to make these calls will have to read the contents of the file and save it on your local file system.

--
Arpit Gupta
Hortonworks Inc.
http://hortonworks.com/

On May 31, 2013, at 9:56 AM, Mohammad Mustaqeem <3m...@gmail.com> wrote:

> This is for reading the content of the file not to download..
> I want to download file.
> 
> 
> On Fri, May 31, 2013 at 10:23 PM, Arpit Gupta <ar...@hortonworks.com> wrote:
> you will have to use the open operation to read the file and save it.
> 
> http://hadoop.apache.org/docs/r2.0.3-alpha/hadoop-project-dist/hadoop-hdfs/WebHDFS.html#Open_and_Read_a_File
> 
> --
> Arpit Gupta
> Hortonworks Inc.
> http://hortonworks.com/
> 
> On May 30, 2013, at 11:44 PM, Mohammad Mustaqeem <3m...@gmail.com> wrote:
> 
>> Is there any way to download a file from HDFS using WebHDFS REST API?
>> I have read - http://hadoop.apache.org/docs/r2.0.3-alpha/hadoop-project-dist/hadoop-hdfs/WebHDFS.html
>> 
>> But didn't find any way to download file.
>> 
>> -- 
>> With regards ---
>> Mohammad Mustaqeem,
>> M.Tech (CSE)
>> MNNIT Allahabad
>> 9026604270
>> 
>> 
> 
> 
> 
> 
> -- 
> With regards ---
> Mohammad Mustaqeem,
> M.Tech (CSE)
> MNNIT Allahabad
> 9026604270
> 
> 


Re: How can we download a file using WebHDFS REST API

Posted by Arpit Gupta <ar...@hortonworks.com>.
There is no api to download a file. The client you are using to make these calls will have to read the contents of the file and save it on your local file system.

--
Arpit Gupta
Hortonworks Inc.
http://hortonworks.com/

On May 31, 2013, at 9:56 AM, Mohammad Mustaqeem <3m...@gmail.com> wrote:

> This is for reading the content of the file not to download..
> I want to download file.
> 
> 
> On Fri, May 31, 2013 at 10:23 PM, Arpit Gupta <ar...@hortonworks.com> wrote:
> you will have to use the open operation to read the file and save it.
> 
> http://hadoop.apache.org/docs/r2.0.3-alpha/hadoop-project-dist/hadoop-hdfs/WebHDFS.html#Open_and_Read_a_File
> 
> --
> Arpit Gupta
> Hortonworks Inc.
> http://hortonworks.com/
> 
> On May 30, 2013, at 11:44 PM, Mohammad Mustaqeem <3m...@gmail.com> wrote:
> 
>> Is there any way to download a file from HDFS using WebHDFS REST API?
>> I have read - http://hadoop.apache.org/docs/r2.0.3-alpha/hadoop-project-dist/hadoop-hdfs/WebHDFS.html
>> 
>> But didn't find any way to download file.
>> 
>> -- 
>> With regards ---
>> Mohammad Mustaqeem,
>> M.Tech (CSE)
>> MNNIT Allahabad
>> 9026604270
>> 
>> 
> 
> 
> 
> 
> -- 
> With regards ---
> Mohammad Mustaqeem,
> M.Tech (CSE)
> MNNIT Allahabad
> 9026604270
> 
> 


Re: How can we download a file using WebHDFS REST API

Posted by Mohammad Mustaqeem <3m...@gmail.com>.
This is for reading the content of the file not to download..
I want to download file.


On Fri, May 31, 2013 at 10:23 PM, Arpit Gupta <ar...@hortonworks.com> wrote:

> you will have to use the open operation to read the file and save it.
>
>
> http://hadoop.apache.org/docs/r2.0.3-alpha/hadoop-project-dist/hadoop-hdfs/WebHDFS.html#Open_and_Read_a_File
>
> --
> Arpit Gupta
> Hortonworks Inc.
> http://hortonworks.com/
> <http://www.hadoopsummit.org/>
>
> On May 30, 2013, at 11:44 PM, Mohammad Mustaqeem <3m...@gmail.com>
> wrote:
>
> Is there any way to download a file from HDFS using WebHDFS REST API?
> I have read -
> http://hadoop.apache.org/docs/r2.0.3-alpha/hadoop-project-dist/hadoop-hdfs/WebHDFS.html
>
> But didn't find any way to download file.
>
> --
> *With regards ---*
> *Mohammad Mustaqeem*,
> M.Tech (CSE)
> MNNIT Allahabad
> 9026604270
>
>
>
>


-- 
*With regards ---*
*Mohammad Mustaqeem*,
M.Tech (CSE)
MNNIT Allahabad
9026604270

Re: How can we download a file using WebHDFS REST API

Posted by Mohammad Mustaqeem <3m...@gmail.com>.
This is for reading the content of the file not to download..
I want to download file.


On Fri, May 31, 2013 at 10:23 PM, Arpit Gupta <ar...@hortonworks.com> wrote:

> you will have to use the open operation to read the file and save it.
>
>
> http://hadoop.apache.org/docs/r2.0.3-alpha/hadoop-project-dist/hadoop-hdfs/WebHDFS.html#Open_and_Read_a_File
>
> --
> Arpit Gupta
> Hortonworks Inc.
> http://hortonworks.com/
> <http://www.hadoopsummit.org/>
>
> On May 30, 2013, at 11:44 PM, Mohammad Mustaqeem <3m...@gmail.com>
> wrote:
>
> Is there any way to download a file from HDFS using WebHDFS REST API?
> I have read -
> http://hadoop.apache.org/docs/r2.0.3-alpha/hadoop-project-dist/hadoop-hdfs/WebHDFS.html
>
> But didn't find any way to download file.
>
> --
> *With regards ---*
> *Mohammad Mustaqeem*,
> M.Tech (CSE)
> MNNIT Allahabad
> 9026604270
>
>
>
>


-- 
*With regards ---*
*Mohammad Mustaqeem*,
M.Tech (CSE)
MNNIT Allahabad
9026604270

Re: How can we download a file using WebHDFS REST API

Posted by Mohammad Mustaqeem <3m...@gmail.com>.
This is for reading the content of the file not to download..
I want to download file.


On Fri, May 31, 2013 at 10:23 PM, Arpit Gupta <ar...@hortonworks.com> wrote:

> you will have to use the open operation to read the file and save it.
>
>
> http://hadoop.apache.org/docs/r2.0.3-alpha/hadoop-project-dist/hadoop-hdfs/WebHDFS.html#Open_and_Read_a_File
>
> --
> Arpit Gupta
> Hortonworks Inc.
> http://hortonworks.com/
> <http://www.hadoopsummit.org/>
>
> On May 30, 2013, at 11:44 PM, Mohammad Mustaqeem <3m...@gmail.com>
> wrote:
>
> Is there any way to download a file from HDFS using WebHDFS REST API?
> I have read -
> http://hadoop.apache.org/docs/r2.0.3-alpha/hadoop-project-dist/hadoop-hdfs/WebHDFS.html
>
> But didn't find any way to download file.
>
> --
> *With regards ---*
> *Mohammad Mustaqeem*,
> M.Tech (CSE)
> MNNIT Allahabad
> 9026604270
>
>
>
>


-- 
*With regards ---*
*Mohammad Mustaqeem*,
M.Tech (CSE)
MNNIT Allahabad
9026604270

Re: How can we download a file using WebHDFS REST API

Posted by Mohammad Mustaqeem <3m...@gmail.com>.
This is for reading the content of the file not to download..
I want to download file.


On Fri, May 31, 2013 at 10:23 PM, Arpit Gupta <ar...@hortonworks.com> wrote:

> you will have to use the open operation to read the file and save it.
>
>
> http://hadoop.apache.org/docs/r2.0.3-alpha/hadoop-project-dist/hadoop-hdfs/WebHDFS.html#Open_and_Read_a_File
>
> --
> Arpit Gupta
> Hortonworks Inc.
> http://hortonworks.com/
> <http://www.hadoopsummit.org/>
>
> On May 30, 2013, at 11:44 PM, Mohammad Mustaqeem <3m...@gmail.com>
> wrote:
>
> Is there any way to download a file from HDFS using WebHDFS REST API?
> I have read -
> http://hadoop.apache.org/docs/r2.0.3-alpha/hadoop-project-dist/hadoop-hdfs/WebHDFS.html
>
> But didn't find any way to download file.
>
> --
> *With regards ---*
> *Mohammad Mustaqeem*,
> M.Tech (CSE)
> MNNIT Allahabad
> 9026604270
>
>
>
>


-- 
*With regards ---*
*Mohammad Mustaqeem*,
M.Tech (CSE)
MNNIT Allahabad
9026604270

Re: How can we download a file using WebHDFS REST API

Posted by Arpit Gupta <ar...@hortonworks.com>.
you will have to use the open operation to read the file and save it.

http://hadoop.apache.org/docs/r2.0.3-alpha/hadoop-project-dist/hadoop-hdfs/WebHDFS.html#Open_and_Read_a_File

--
Arpit Gupta
Hortonworks Inc.
http://hortonworks.com/

On May 30, 2013, at 11:44 PM, Mohammad Mustaqeem <3m...@gmail.com> wrote:

> Is there any way to download a file from HDFS using WebHDFS REST API?
> I have read - http://hadoop.apache.org/docs/r2.0.3-alpha/hadoop-project-dist/hadoop-hdfs/WebHDFS.html
> 
> But didn't find any way to download file.
> 
> -- 
> With regards ---
> Mohammad Mustaqeem,
> M.Tech (CSE)
> MNNIT Allahabad
> 9026604270
> 
> 


Re: How can we download a file using WebHDFS REST API

Posted by Arpit Gupta <ar...@hortonworks.com>.
you will have to use the open operation to read the file and save it.

http://hadoop.apache.org/docs/r2.0.3-alpha/hadoop-project-dist/hadoop-hdfs/WebHDFS.html#Open_and_Read_a_File

--
Arpit Gupta
Hortonworks Inc.
http://hortonworks.com/

On May 30, 2013, at 11:44 PM, Mohammad Mustaqeem <3m...@gmail.com> wrote:

> Is there any way to download a file from HDFS using WebHDFS REST API?
> I have read - http://hadoop.apache.org/docs/r2.0.3-alpha/hadoop-project-dist/hadoop-hdfs/WebHDFS.html
> 
> But didn't find any way to download file.
> 
> -- 
> With regards ---
> Mohammad Mustaqeem,
> M.Tech (CSE)
> MNNIT Allahabad
> 9026604270
> 
> 


Re: How can we download a file using WebHDFS REST API

Posted by Arpit Gupta <ar...@hortonworks.com>.
you will have to use the open operation to read the file and save it.

http://hadoop.apache.org/docs/r2.0.3-alpha/hadoop-project-dist/hadoop-hdfs/WebHDFS.html#Open_and_Read_a_File

--
Arpit Gupta
Hortonworks Inc.
http://hortonworks.com/

On May 30, 2013, at 11:44 PM, Mohammad Mustaqeem <3m...@gmail.com> wrote:

> Is there any way to download a file from HDFS using WebHDFS REST API?
> I have read - http://hadoop.apache.org/docs/r2.0.3-alpha/hadoop-project-dist/hadoop-hdfs/WebHDFS.html
> 
> But didn't find any way to download file.
> 
> -- 
> With regards ---
> Mohammad Mustaqeem,
> M.Tech (CSE)
> MNNIT Allahabad
> 9026604270
> 
> 


Re: How can we download a file using WebHDFS REST API

Posted by Arpit Gupta <ar...@hortonworks.com>.
you will have to use the open operation to read the file and save it.

http://hadoop.apache.org/docs/r2.0.3-alpha/hadoop-project-dist/hadoop-hdfs/WebHDFS.html#Open_and_Read_a_File

--
Arpit Gupta
Hortonworks Inc.
http://hortonworks.com/

On May 30, 2013, at 11:44 PM, Mohammad Mustaqeem <3m...@gmail.com> wrote:

> Is there any way to download a file from HDFS using WebHDFS REST API?
> I have read - http://hadoop.apache.org/docs/r2.0.3-alpha/hadoop-project-dist/hadoop-hdfs/WebHDFS.html
> 
> But didn't find any way to download file.
> 
> -- 
> With regards ---
> Mohammad Mustaqeem,
> M.Tech (CSE)
> MNNIT Allahabad
> 9026604270
> 
>