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https://issues.apache.org/jira/browse/GEODE-10067?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Owen Nichols closed GEODE-10067.
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> WANCopyRegionFunctionDelegate needs to be optimized to handle large regions
> ---------------------------------------------------------------------------
>
> Key: GEODE-10067
> URL: https://issues.apache.org/jira/browse/GEODE-10067
> Project: Geode
> Issue Type: Improvement
> Components: wan
> Affects Versions: 1.15.0
> Reporter: Udo Kohlmeyer
> Assignee: Alberto Gomez
> Priority: Major
> Labels: pull-request-available
> Fix For: 1.15.0
>
>
> The current WanCopyRegionFunctionDelegate may cause significant memory issues
> in with really large regions.
> The
> [getEntries|https://github.com/apache/geode/blob/develop/geode-wan/src/main/java/org/apache/geode/management/internal/cli/functions/WanCopyRegionFunctionDelegate.java#L102]
> method returns both primary and redundant Region Entries for local server.
> The invocation of getEntries from the PartitionedRegionDataStore will cause
> all entries to be deserialized
> https://github.com/apache/geode/blob/develop/geode-core/src/main/java/org/apache/geode/internal/cache/PartitionedRegionDataStore.java#L2501-L2515
> The
> [createBatch|https://github.com/apache/geode/blob/develop/geode-wan/src/main/java/org/apache/geode/management/internal/cli/functions/WanCopyRegionFunctionDelegate.java#L107-L108]
> method creates a List<GatewayQueueEvent> equally that of the local Region
> size.
> Essentially ... In a system with VERY large regions this might cause
> significant memory issues
>
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