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From Ivan Kelly <iv...@yahoo-inc.com>
Subject Re: Integrating BookKeeper with HDFS
Date Mon, 19 Mar 2012 09:14:05 GMT
Hi Venkat,

Have a look at http://hadoop.apache.org/common/docs/r0.20.1/api/org/apache/hadoop/fs/FileSystem.html
There's a method #getFileBlockLocations

CCing bookkeeper-user list again. Could you reply all when you reply?

-Ivan

On 16 Mar 2012, at 19:38, venkat wrote:

> Hi Ivan,
>           How to fetch the Data block details from the namenode?
> Awaiting your reply
> 
> On Fri, Mar 16, 2012 at 1:00 AM, venkat <venkatglories@gmail.com> wrote:
>>             I am trying to efficiently manage the data across
>> clusters(inter-cluster management). suppose I have 5 clusters with a
>> namenode each, my data is replicated across these five clusters. So
>> when a job comes I need to fetch the details about the data present in
>> datanodes which is available in NN.
>> 
>> 
>> 
>> 
>> 
>> On Fri, Mar 16, 2012 at 12:47 AM, Ivan Kelly <ivank@yahoo-inc.com> wrote:
>>> On 15 Mar 2012, at 20:09, venkat wrote:
>>>>            The guide helped me a lot.My hadoop work got stagnant with
>>>> this integration problem. Now my bookkeeper is working fine with HDFS.
>>>> Is it possible to fetch the namenode details( data blocks information)
>>>> from the bookkeeper ??
>>> No, you have to go to the namenode for that. What is it exactly you'd like to
do?
>>> 
>>> -Ivan


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