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https://issues.apache.org/jira/browse/IGNITE-24166?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Aleksandr resolved IGNITE-24166.
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Resolution: Duplicate
IGNITE-24163
> EventLog. Fix ChannelRegistry implementation performance issues.
> ----------------------------------------------------------------
>
> Key: IGNITE-24166
> URL: https://issues.apache.org/jira/browse/IGNITE-24166
> Project: Ignite
> Issue Type: Bug
> Reporter: Andrey Mashenkov
> Priority: Blocker
> Labels: ignite-3, performance
>
> Every `EventLogImpl.log()` method call causes
> `ConfigurationBasedChannelRegistry.findAllChannelsByEventType()` call on the
> hot path.
> The last one may return a copy of cached collection, which is designed to be
> immutable, by no reason.
> The cache is updated from another thread when cluster configuration changed,
> which is rarely happened.
> A new caches can be constructed outside the lock, and just replaced with new
> instances under the lock.
> Let's implement copy-on-write properly.
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