On 2011/10/11 11:13, Uma Maheswara Rao G 72686 wrote:
I did not get your proposed strategy implementations.
Note that, already you can set the replication levels for files. If you set
less replication, then obviously your perf and space will get benefits and also
risk will be high in this case. I think we can manage your requirements using
that replication factor. Your expectations are something different that this?
Regards,
Uma
----- Original Message -----
From: gschen<gongsuoc...@yahoo.com.cn>
Date: Tuesday, October 11, 2011 8:14 am
Subject: Strategy Of Replica
To: "common-dev@hadoop.apache.org"<common-dev@hadoop.apache.org>
Hi guys,
What do you think of the strategy of replication in hdfs? How about
the
customized strategy that users customized their strategy of
replication
such as price, performance and so on?
Thank you in advance.
Thanks for your reply. In hdfs only one thing we can do is that we could
set replication factor to change replication strategy, but we can not
change where the block is stored and what type of storage that we stored
the data. Just think this case: In order to improve the downloading
speed, I can choose my block replication near my location or near
someone's location. I mean that users could have more option to decide
their block replication strategy.
