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From "Andrew Purtell (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (HBASE-12731) Heap occupancy based client pushback
Date Fri, 19 Dec 2014 20:03:13 GMT

     [ https://issues.apache.org/jira/browse/HBASE-12731?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Andrew Purtell updated HBASE-12731:
-----------------------------------
    Description: 
If the heap occupancy of a RegionServer is beyond a configurable high water mark (suggestions:
95%, 98%) then we should reject all user RPCs and only allow administrative RPCs until occupancy
has dropped below a configurable low water mark (suggestions: 92%). 

Implement building on the HBASE-5162 changes.

It might be expensive to check heap occupancy, in which case we can sample it periodically
with a chore and use the last known value in pushback calculations. 

  was:
If the heap occupancy of a RegionServer is beyond a configurable high water mark (suggestions:
95%, 98%) then we should reject all user RPCs and only allow administrative RPCs until occupancy
has dropped below a configurable low water mark (suggestions: 90%). 

Implement building on the HBASE-5162 changes.

It might be expensive to check heap occupancy, in which case we can sample it periodically
with a chore and use the last known value in pushback calculations. 


> Heap occupancy based client pushback
> ------------------------------------
>
>                 Key: HBASE-12731
>                 URL: https://issues.apache.org/jira/browse/HBASE-12731
>             Project: HBase
>          Issue Type: New Feature
>            Reporter: Andrew Purtell
>            Assignee: Andrew Purtell
>
> If the heap occupancy of a RegionServer is beyond a configurable high water mark (suggestions:
95%, 98%) then we should reject all user RPCs and only allow administrative RPCs until occupancy
has dropped below a configurable low water mark (suggestions: 92%). 
> Implement building on the HBASE-5162 changes.
> It might be expensive to check heap occupancy, in which case we can sample it periodically
with a chore and use the last known value in pushback calculations. 



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