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From Jeff Zhang <zjf...@gmail.com>
Subject Re: How to make command setrepr take effect on data node ?
Date Sun, 13 Jun 2010 03:18:11 GMT
So when will the replication happen ? Do you know which part of code
control the replication ? Thanks.



On Sun, Jun 13, 2010 at 11:10 AM, Eric Sammer <esammer@cloudera.com> wrote:
> There is no way to force replication other than setrep. Do you have
> fewer nodes than configured replicas? Hadoop will not place two
> replicas on one data node, for instance.
>
> On Sat, Jun 12, 2010 at 12:18 AM, Jeff Zhang <zjffdu@gmail.com> wrote:
>> But when I invoke command fsck, it show that one replica is missing.
>> So how can I force the replication ?
>>
>> On Sat, Jun 12, 2010 at 12:13 PM, Eric Sammer <esammer@cloudera.com> wrote:
>>> Jeff:
>>>
>>> The name node will instruct the data nodes to do either remove or
>>> create new replicas. There's nothing additional you need to do other
>>> than fs -setrep.
>>>
>>> On Fri, Jun 11, 2010 at 3:18 AM, Jeff Zhang <zjffdu@gmail.com> wrote:
>>>> Hi all,
>>>>
>>>> The command bin/hadoop setrepr only affect the metadata in namenode.
>>>> So How can I make it take effect on data node ? Thanks.
>>>>
>>>> --
>>>> Best Regards
>>>>
>>>> Jeff Zhang
>>>>
>>>
>>>
>>>
>>> --
>>> Eric Sammer
>>> phone: +1-917-287-2675
>>> twitter: esammer
>>> data: www.cloudera.com
>>>
>>
>>
>>
>> --
>> Best Regards
>>
>> Jeff Zhang
>>
>
>
>
> --
> Eric Sammer
> phone: +1-917-287-2675
> twitter: esammer
> data: www.cloudera.com
>



-- 
Best Regards

Jeff Zhang

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