Re: Why per tablet server 's upper limit is 4TB.

2017-08-31 Thread yuyunliuhen 
It is very helpful. thanks ！


原始邮件
发件人:Jean-Daniel cryansjdcry...@apache.org
收件人:useru...@kudu.apache.org
发送时间:2017年8月30日(周三) 23:50
主题:Re: Why per tablet server 's upper limit is 4TB.


Hi all,


We bumped the limit as of 1.4.0 but the new docs haven't been re-published, you 
can still see them 
here:https://github.com/apache/kudu/commit/0e41d4cce5ca96cb08612475f76539f6c8bc58f1


Hope this helps,


J-D


On Wed, Aug 30, 2017 at 3:56 AM, Denis Bolshakov bolshakov.de...@gmail.com 
wrote:

Mike Percy answers to @kinglee (from Kudu Slack channel)
there are multiple issues that interact but one issue is that if you have many 
tablets you will use many threads. Adar has been focusing on improving density 
lately and trying to quantify the scaling limits.




On 30 August 2017 at 13:22, yuyunliuhen yuyunliu...@gmail.com wrote:

"Recommended maximum amount of stored data, post-replication and 
post-compression, per tablet server is 4TB."
what will happen if the data more than 4T? the disk is large than before. 6T a 
disk is is common, there any test data or doc?







-- 

//with Best Regards
--Denis Bolshakov
e-mail: bolshakov.de...@gmail.com

Re: Why per tablet server 's upper limit is 4TB.

2017-08-30 Thread Denis Bolshakov 
Mike Percy answers to @kinglee (from Kudu Slack channel)
there are multiple issues that interact but one issue is that if you have
many tablets you will use many threads. Adar has been focusing on improving
density lately and trying to quantify the scaling limits.


On 30 August 2017 at 13:22, yuyunliuhen  wrote:

> "Recommended maximum amount of stored data, post-replication and
> post-compression, per tablet server is 4TB."
> what will happen if the data more than 4T? the disk is large than before.
> 6T a disk is is common, there any test data or doc?
>
>


-- 
//with Best Regards
--Denis Bolshakov
e-mail: bolshakov.de...@gmail.com