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https://issues.apache.org/jira/browse/HBASE-30209?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Work on HBASE-30209 started by Xiao Liu.
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> MobFileCleanerChore is not registered for online configuration updates
> ----------------------------------------------------------------------
>
> Key: HBASE-30209
> URL: https://issues.apache.org/jira/browse/HBASE-30209
> Project: HBase
> Issue Type: Improvement
> Components: master, mob
> Reporter: Xiao Liu
> Assignee: Xiao Liu
> Priority: Major
> Labels: pull-request-available
> Fix For: 2.7.0, 3.0.0-beta-2, 2.5.16, 2.6.7
>
>
> {\{MobFileCleanerChore}} implements \{{ConfigurationObserver}}, but
> \{{HMaster}} only creates and schedules the chore and does not register it
> with \{{ConfigurationManager}}.
> Because of this, online configuration reloads triggered by \{{update_config}}
> do not reach \{{MobFileCleanerChore}}. In practice, changes such as
> \{{hbase.master.mob.cleaner.threads}} do not take effect until the master is
> restarted.
> This patch registers \{{MobFileCleanerChore}} with \{{ConfigurationManager}}
> during initialization, deregisters it during shutdown, and adds tests to
> cover both the \{{HMaster}} wiring and the chore's own configuration change
> handling.
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