[
https://issues.apache.org/jira/browse/HBASE-12731?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14288056#comment-14288056
]
Lars Hofhansl commented on HBASE-12731:
---------------------------------------
Looks good to me. +1
(I admit I am having a bit of a hard time convincing myself that there will
never be any unintended effect when turning this on by default.)
> 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
> Fix For: 2.0.0, 0.98.10, 1.1.0
>
> Attachments: HBASE-12731.patch, HBASE-12731.patch, HBASE-12731.patch
>
>
> 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.
--
This message was sent by Atlassian JIRA
(v6.3.4#6332)
