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From 金杰 <hellojin...@gmail.com>
Subject Re: issue about add disk on DN
Date Thu, 07 Nov 2013 04:18:20 GMT
You can setup a test environment, and have a try.

By decrement 1, the replica blocks will be reduced.


Best Regards
金杰 (Jie Jin)


On Thu, Nov 7, 2013 at 10:39 AM, ch huang <justlooks@gmail.com> wrote:

> 这个好像不太合理吧,如果我原来3块盘的话,变成6块盘需要由3个拷贝改成六个拷贝?
> 那我如果弄完后改回3个拷贝原来的数据还是存6拷贝的呀,那不是浪费空间?
>
> On Thu, Nov 7, 2013 at 9:44 AM, 金杰 <hellojinjie@gmail.com> wrote:
>
>>  yes, you can rebalance them. try hdfs rebalance. Or, you can first
>> increment the replica by 1, then decrement by 1.
>>
>>
>> Best Regards
>> 金杰 (Jay Jin)
>>
>>
>> On Thu, Nov 7, 2013 at 8:34 AM, ch huang <justlooks@gmail.com> wrote:
>>
>>> hi,all:
>>>         i have a DN,and i mount the two disk ,one disk for
>>> /data/dataspace/1, and one disk for /data/dataspace/2,
>>> the two disk is almost full, so i add a new disk,and modify the config
>>> file,now
>>> disk3 mount on /data/dataspace/3 , is it possible even distribution of
>>> data on the three disks?
>>>
>>
>>
>

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