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https://issues.apache.org/jira/browse/IGNITE-12902?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17093782#comment-17093782
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Alexey Goncharuk commented on IGNITE-12902:
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Merged to master, thanks!
> Concurrent modification in time to iterate by events
> ----------------------------------------------------
>
> Key: IGNITE-12902
> URL: https://issues.apache.org/jira/browse/IGNITE-12902
> Project: Ignite
> Issue Type: Improvement
> Reporter: Kirill Tkalenko
> Assignee: Kirill Tkalenko
> Priority: Major
> Fix For: 2.9
>
> Time Spent: 10m
> Remaining Estimate: 0h
>
> {code:java}
> [10:20:37]W: [org.apache.ignite:ignite-core] [2020-02-20
> 10:20:37,324][ERROR][main][CacheExchangeMergeTest9] Failed to pre-stop
> processor: GridProcessorAdapter []
> [10:20:37]W: [org.apache.ignite:ignite-core]
> java.util.ConcurrentModificationException
> [10:20:37]W: [org.apache.ignite:ignite-core] at
> java.util.ArrayList$Itr.checkForComodification(ArrayList.java:909)
> [10:20:37]W: [org.apache.ignite:ignite-core] at
> java.util.ArrayList$Itr.next(ArrayList.java:859)
> [10:20:37]W: [org.apache.ignite:ignite-core] at
> org.apache.ignite.internal.processors.cache.distributed.dht.preloader.GridDhtPartitionsExchangeFuture.onDone(GridDhtPartitionsExchangeFuture.java:2302)
> [10:20:37]W: [org.apache.ignite:ignite-core] at
> org.apache.ignite.internal.processors.cache.distributed.dht.preloader.GridDhtPartitionsExchangeFuture.onDone(GridDhtPartitionsExchangeFuture.java:142)
> [10:20:37]W: [org.apache.ignite:ignite-core] at
> org.apache.ignite.internal.util.future.GridFutureAdapter.onDone(GridFutureAdapter.java:464)
> [10:20:37]W: [org.apache.ignite:ignite-core] at
> org.apache.ignite.internal.processors.cache.GridCachePartitionExchangeManager.onKernalStop0(GridCachePartitionExchangeManager.java:821)
> [10:20:37]W: [org.apache.ignite:ignite-core] at
> org.apache.ignite.internal.processors.cache.GridCacheSharedManagerAdapter.onKernalStop(GridCacheSharedManagerAdapter.java:120)
> [10:20:37]W: [org.apache.ignite:ignite-core] at
> org.apache.ignite.internal.processors.cache.GridCacheProcessor.onKernalStop(GridCacheProcessor.java:972){code}
> In that place we are going over event’s collection, looking for server
> leave’s event:
> {code:java}
> for (DiscoveryEvent evt : evts.events()) {
> if (serverLeftEvent(evt)) {
> for (CacheGroupContext grp : cctx.cache().cacheGroups())
> grp.affinityFunction().removeNode(evt.eventNode().id());
> }
> }
> {code}
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