Maysam Yabandeh commented on YARN-2162:

If we add this feature, it should certainly be optional. Think of the following 
scenario, which quite usual:
# Cluster is divided between 100 queues
# Queue 1 require more resources and ask for more capacity
# More machines added to the cluster to respond to the new demand of  Queue 1
# The min and max Resources of Queue 1 is updated accordingly

If the  queues' min and max resources are expressed in terms of percentage, 
then all the queues have to update their percentage.

> Fair Scheduler :ability to configure minResources and maxResources in terms 
> of percentage
> -----------------------------------------------------------------------------------------
>                 Key: YARN-2162
>                 URL: https://issues.apache.org/jira/browse/YARN-2162
>             Project: Hadoop YARN
>          Issue Type: Improvement
>          Components: scheduler
>            Reporter: Ashwin Shankar
>              Labels: scheduler
> minResources and maxResources in fair scheduler configs are expressed in 
> terms of absolute numbers X mb, Y vcores. 
> As a result, when we expand or shrink our hadoop cluster, we need to 
> recalculate and change minResources/maxResources accordingly, which is pretty 
> inconvenient.
> We can circumvent this problem if we can (optionally) configure these 
> properties in terms of percentage of cluster capacity. 

This message was sent by Atlassian JIRA

Reply via email to