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From 段洪义 <duanhon...@doopai.com>
Subject Re: How to restore HDFS data
Date Tue, 07 May 2013 00:17:07 GMT
Thank you, I use rsync to backup every day, so I lost a day of data.


于 2013年05月02日 21:19, Harsh J 写道:
> If you've already run -delete (-move is a better choice if you know DN 
> fault is temporary), then the missing blocks are already deleted from 
> the namespace permanently. No way to recover the data since the blocks 
> have also been invalidated by now.
>
> A HDFS Snapshots feature will arrive in near future to cover the 
> backup scenarios that may prove useful in cases such as this.
>
>
> On Thu, May 2, 2013 at 6:23 PM, 段洪义 <duanhongyi@doopai.com 
> <mailto:duanhongyi@doopai.com>> wrote:
>
>     Datanode error, and then I run hadoop fsck /-delete.Lost a lot of
>     data,
>     Later, these datanode recovery, Is there any way to restore the fsck
>     command to delete the data.
>
>
>
>
> -- 
> Harsh J


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