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https://issues.apache.org/jira/browse/ACCUMULO-4047?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jeffrey Manno resolved ACCUMULO-4047.
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Resolution: Cannot Reproduce
This no longer appears to be an issue after TabletBalancer has moved to become
an interface along with several other changes since this ticket was created. I
could not reproduce by utilizing ChaoticLoadBalancer, removing all
constructors, and then confirming that ChoatLoadBalancer is applied and set
properly.
> TabletBalancer has an implicit requirement for a specific constructor
> ---------------------------------------------------------------------
>
> Key: ACCUMULO-4047
> URL: https://issues.apache.org/jira/browse/ACCUMULO-4047
> Project: Accumulo
> Issue Type: Improvement
> Components: master
> Reporter: Josh Elser
> Priority: Major
>
> TabletBalancers are an extension point designed for non-core-Accumulo devs to
> implement balancers for a specific purpose.
> As noticed in ACCUMULO-3356, there is an unwritten requirement that any
> concrete implementations of TabletBalancer have a constructor that takes a
> String object as an argument. This wouldn't be so bad but it's a silent
> failure that falls back to the DefaultBalancer (that's why we haven't noticed
> ACCUMULO-3356 for ages).
> TabletBalancer already has an init method which could be used. There are lots
> of other ways it could be addressed. At a minimum, this should be prominently
> documented.
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