Ray Mattingly created HBASE-29071:
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Summary: StochasticLoadBalancer candidate generators should use a
Map, rather than ordinal based indexing
Key: HBASE-29071
URL: https://issues.apache.org/jira/browse/HBASE-29071
Project: HBase
Issue Type: Improvement
Affects Versions: 2.6.1
Reporter: Ray Mattingly
Assignee: Ray Mattingly
The StochasticLoadBalancer maintains an enum of generator types, and then using
the ordinal of that enum to order a list of candidate generators. This approach
is needlessly fragile, and I think we should refactor it to use a Map instead.
As a bonus, using a map could unlock the ability to support pluggable candidate
generation if we wanted. I think that could be a nice way to offer robust
balancer customization, without requiring that people write complex cost
functions or an entire balancer implementation.
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