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https://issues.apache.org/jira/browse/IGNITE-4239?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15672789#comment-15672789
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Taras Ledkov commented on IGNITE-4239:
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Root cause: SizeJob is always executed in the public thread pool.
> Public thread pool starvation is cause of deadlock when user's jobs calls
> cache.size()
> --------------------------------------------------------------------------------------
>
> Key: IGNITE-4239
> URL: https://issues.apache.org/jira/browse/IGNITE-4239
> Project: Ignite
> Issue Type: Bug
> Components: cache, compute
> Affects Versions: 1.6
> Reporter: Taras Ledkov
> Assignee: Taras Ledkov
> Priority: Critical
> Fix For: 1.9
>
>
> The users job are hang when a lot of jobs that calculates cache size are
> submitted.
> The log contains message:
> {code}
> WARNING: Possible thread pool starvation detected (no task completed in last
> 30000ms, is executorService pool size large enough?)
> {code}
> After a while all the thread of a public thread pool are locked on waiting
> the SizeTask future.
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