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https://issues.apache.org/jira/browse/IGNITE-2699?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15155519#comment-15155519
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Vladimir Ozerov commented on IGNITE-2699:
-----------------------------------------
Problematic code frame: GridContinuousProcessor.addNotification ->
SyncMessageAckFuture.get(). When we are at this point, we are in the
SYSTEM_POOL. Notification is also processed in a SYSTEM_POOL of another node.
Hence, starvation is possible.
> Starvation when CacheEntryListenerConfiguration.isSynchronous is true
> ---------------------------------------------------------------------
>
> Key: IGNITE-2699
> URL: https://issues.apache.org/jira/browse/IGNITE-2699
> Project: Ignite
> Issue Type: Bug
> Components: cache
> Affects Versions: 1.5.0.final
> Reporter: Nikolay Tikhonov
> Fix For: 1.6
>
>
> When event notifications in {{CacheEntryListener}} configured as synchronous
> possible situation that all thread in {{SYSTEM}} pool will be stuck on
> waiting ack messages. It is necessary to make the processing of acknowledge
> messages in another thread pool.
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