[ 
https://issues.apache.org/jira/browse/HBASE-16417?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15728092#comment-15728092
 ] 

Eshcar Hillel commented on HBASE-16417:
---------------------------------------

I am not suggesting to set eager as default.
We can have basic as default and if users want they can set eager on a per CF 
basis. Eager can be recommended to CF that have high churn, or that have a 
small working set at any point in time like our original sliding window 
scenario. For example, we can recommend all applications that used to set a CF 
to be IN_MEMORY to try and set it to eager. 

With respect to chunks, in my experiments running with MSLABS even with no 
chunk pool showed inferior results, however I didn't go much deeper with these 
parameters and didn't do full exhaustive tests. 
I think that you guys are much more familiar with all the details regarding L2 
and off-heaping and which parameters can be played with and tuned, so it would 
be a good idea that you will run these tests.

> In-Memory MemStore Policy for Flattening and Compactions
> --------------------------------------------------------
>
>                 Key: HBASE-16417
>                 URL: https://issues.apache.org/jira/browse/HBASE-16417
>             Project: HBase
>          Issue Type: Sub-task
>            Reporter: Anastasia Braginsky
>            Assignee: Eshcar Hillel
>             Fix For: 2.0.0
>
>         Attachments: HBASE-16417-benchmarkresults-20161101.pdf, 
> HBASE-16417-benchmarkresults-20161110.pdf, 
> HBASE-16417-benchmarkresults-20161123.pdf, 
> HBASE-16417-benchmarkresults-20161205.pdf
>
>




--
This message was sent by Atlassian JIRA
(v6.3.4#6332)

Reply via email to