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Posted to common-user@hadoop.apache.org by Sagar Naik <sn...@attributor.com> on 2008/12/17 20:04:22 UTC

Does datanode acts as readonly in case of DiskFull ?

Hi ,

I would like to know what happens in case of DiskFull on a datanode
Does the datanode acts as block server only ?

Does it rejects anymore Block creation request OR Namenode does not list 
it for new blocks


Hadoop 18
-Sagar

Re: Does datanode acts as readonly in case of DiskFull ?

Posted by Sagar Naik <sn...@attributor.com>.

Raghu Angadi wrote:
> Sagar Naik wrote:
>> Hi ,
>>
>> I would like to know what happens in case of DiskFull on a datanode
>> Does the datanode acts as block server only ?
>
> Yes. I think so.
>
>> Does it rejects anymore Block creation request OR Namenode does not 
>> list it for new blocks
>
> yes. NN will not allocate it any more blocks.
>
> Did you notice anything different? (which is quite possible).
>
Thanks Raghu.
I dont knw yet. But I am approaching this condition.
I will mail in case of discrepancy

-Sagar
> Raghu.
>
>>
>> Hadoop 18
>> -Sagar
>

Re: Does datanode acts as readonly in case of DiskFull ?

Posted by Raghu Angadi <ra...@yahoo-inc.com>.

Sagar Naik wrote:
> Hi ,
> 
> I would like to know what happens in case of DiskFull on a datanode
> Does the datanode acts as block server only ?

Yes. I think so.

> Does it rejects anymore Block creation request OR Namenode does not list 
> it for new blocks

yes. NN will not allocate it any more blocks.

Did you notice anything different? (which is quite possible).

Raghu.

> 
> Hadoop 18
> -Sagar