[
https://issues.apache.org/jira/browse/HBASE-25768?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Duo Zhang updated HBASE-25768:
------------------------------
Fix Version/s: 4.0.0-alpha-1
(was: 3.0.0-beta-2)
> Support an overall coarse and fast balance strategy for StochasticLoadBalancer
> ------------------------------------------------------------------------------
>
> Key: HBASE-25768
> URL: https://issues.apache.org/jira/browse/HBASE-25768
> Project: HBase
> Issue Type: Improvement
> Components: Balancer
> Affects Versions: 3.0.0-alpha-1, 2.0.0, 1.4.13
> Reporter: Xiaolin Ha
> Assignee: Xiaolin Ha
> Priority: Major
> Labels: pull-request-available
> Fix For: 4.0.0-alpha-1
>
>
> When we use StochasticLoadBalancer + balanceByTable, we could face two
> difficulties.
> # For each table, their regions are distributed uniformly, but for the
> overall cluster, still exiting imbalance between RSes;
> # When there are large-scaled restart of RSes, or expansion for groups or
> cluster, we hope the balancer can execute as soon as possible, but the
> StochasticLoadBalancer may need a lot of time to compute costs.
> We can detect these circumstances in StochasticLoadBalancer(such as using the
> percentage of skew tables), and before the normal balance steps trying, we
> can add a strategy to let it just balance like the SimpleLoadBalancer or use
> few light cost functions here.
>
>
--
This message was sent by Atlassian Jira
(v8.20.10#820010)
