AMashenkov commented on a change in pull request #336: URL: https://github.com/apache/ignite-3/pull/336#discussion_r714593956
########## File path: modules/configuration/src/main/java/org/apache/ignite/internal/configuration/ConfigurationNode.java ########## @@ -17,24 +17,27 @@ package org.apache.ignite.internal.configuration; -import java.util.Collections; +import java.util.Collection; import java.util.List; import java.util.NoSuchElementException; import java.util.Objects; -import java.util.concurrent.CopyOnWriteArrayList; +import org.apache.ignite.configuration.ConfigurationListenOnlyException; import org.apache.ignite.configuration.ConfigurationProperty; import org.apache.ignite.configuration.RootKey; import org.apache.ignite.configuration.notifications.ConfigurationListener; import org.apache.ignite.internal.configuration.tree.TraversableTreeNode; import org.apache.ignite.internal.configuration.util.ConfigurationUtil; import org.apache.ignite.internal.configuration.util.KeyNotFoundException; +import static java.util.Collections.unmodifiableCollection; +import static java.util.concurrent.ConcurrentHashMap.newKeySet; + /** * Super class for dynamic configuration tree nodes. Has all common data and value retrieving algorithm in it. */ public abstract class ConfigurationNode<VIEW, CHANGE> implements ConfigurationProperty<VIEW, CHANGE> { /** Listeners of property update. */ - protected final List<ConfigurationListener<VIEW>> updateListeners = new CopyOnWriteArrayList<>(); + protected final Collection<ConfigurationListener<VIEW>> updateListeners = newKeySet(); Review comment: ```suggestion protected final Collection<ConfigurationListener<VIEW>> updateListeners = ConcurrentHashMap.newKeySet(); ``` -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: notifications-unsubscr...@ignite.apache.org For queries about this service, please contact Infrastructure at: us...@infra.apache.org