Hi,

I am new to HDFS.  I read HDFS documents on the internet but I couldn't
figure out the following.
Is there a way to find a list of data nodes where a file is distributed to
 when I executed a command such as

hadoop dfs –copyFromLocal /tmp/testdata /user/chansup/test

Thanks,
- Chansup

Go to the NameNode web UI (default port is 50070) and select 'Browse the
filesystem' and drill down to the file. At the bottom of the page the block
report is shown. Or else 'hadoop fsck / -files -blocks -locations' from the
CLI will also give the block report for all the files in HDFS.

Thanks,
Praveen

On Mon, Nov 28, 2011 at 9:29 PM, CB <[EMAIL PROTECTED]> wrote:

> Hi,
>
> I am new to HDFS.  I read HDFS documents on the internet but I couldn't
> figure out the following.
> Is there a way to find a list of data nodes where a file is distributed to
>  when I executed a command such as
>
> hadoop dfs –copyFromLocal /tmp/testdata /user/chansup/test
>
>
>
> Thanks,
> - Chansup
>
>

>From Java API,  FileSystem#getFileBlockLocations should give you the blocklocations.

Regards,
Uma
________________________________
From: Praveen Sripati [[EMAIL PROTECTED]]
Sent: Monday, November 28, 2011 10:01 PM
To: [EMAIL PROTECTED]
Subject: Re: how to find data nodes on which a file is distributed to?

Go to the NameNode web UI (default port is 50070) and select 'Browse the filesystem' and drill down to the file. At the bottom of the page the block report is shown. Or else 'hadoop fsck / -files -blocks -locations' from the CLI will also give the block report for all the files in HDFS.

Thanks,
Praveen

On Mon, Nov 28, 2011 at 9:29 PM, CB <[EMAIL PROTECTED]<mailto:[EMAIL PROTECTED]>> wrote:
Hi,

I am new to HDFS.  I read HDFS documents on the internet but I couldn't figure out the following.
Is there a way to find a list of data nodes where a file is distributed to  when I executed a command such as

hadoop dfs –copyFromLocal /tmp/testdata /user/chansup/test
Thanks,
- Chansup