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From "Edward J. Yoon" <edwardy...@apache.org>
Subject Re: Question regarding HDFS Recovery
Date Wed, 20 May 2009 15:40:31 GMT
Can I ask what version do you read? You looks reach so deeply into the
architecture of a system...

On Thu, May 21, 2009 at 12:28 AM, Sangmin Lee <sangmin.dev@gmail.com> wrote:
> Okay.. I was going dumb by misreading some source code.
> Please ignore my question regarding this.
> Sorry about this.
>
> Sangmin
>
> On Tue, May 19, 2009 at 11:59 PM, Sangmin Lee <sangmin.dev@gmail.com> wrote:
>
>> Hi all,
>>
>> I have some question regarding the hdfs recovery mechanism.
>>
>> I see that INodeFileUnderConstruction has a "targets" field that stores
>> list of datanodes which store its last block.
>> However, I don't see them being used at all except that
>> "internalReleaseLease" function uses the length of the datanode list.
>> Is there any other use of the "target" fields rather than checking its
>> length?
>>
>> Could anyone shed some light on this?
>>
>> Thanks,
>> Sangmin
>>
>



-- 
Best Regards, Edward J. Yoon @ NHN, corp.
edwardyoon@apache.org
http://blog.udanax.org

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