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https://issues.apache.org/jira/browse/IGNITE-19467?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Mirza Aliev updated IGNITE-19467:
---------------------------------
Epic Link: IGNITE-19577
> Remove redundant zones' iteration on DistributionManager.start and optimize
> usage of cfg.change in the DistributionManager
> ----------------------------------------------------------------------------------------------------------------------------
>
> Key: IGNITE-19467
> URL: https://issues.apache.org/jira/browse/IGNITE-19467
> Project: Ignite
> Issue Type: Bug
> Reporter: Mirza Aliev
> Priority: Major
> Labels: ignite-3
>
> *Motivation:*
> It DistributionManager.start we have call of initDataNodesFromVaultManager,
> which contains the following code
> {noformat}
> zonesConfiguration.distributionZones().value().forEach(zone
> -> {
> int zoneId = zone.zoneId();
> saveDataNodesAndUpdateTriggerKeysInMetaStorage(
> zoneId,
> appliedRevision,
> logicalTopology
> );
> });
> {noformat}
> This logic is redundant, because we have the same logic on a zone creation
> ({{DistributionZoneManager.ZonesConfigurationListener#onCreate}}), and when
> node is restarted, all configuration changes are applied again, meaning that
> {{DistributionZoneManager.ZonesConfigurationListener#onCreate}} will be
> called. Also we can review the possibility to remove the same code for a
> default zone, but instead of the named list scenario with the user's zones,
> {{onCreate}} for the default zone is not triggered after restart.
> Also there are several places in the code, which we use such constructions:
> {noformat}
> change = zonesConfiguration.change(zonesChange ->
> zonesChange.changeDistributionZones(zonesListChange -> {
> {noformat}
> This code could be optimised and redundant
> {{zonesChange.changeDistributionZones(zonesListChange -> }} closure can be
> eliminated
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