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https://issues.apache.org/jira/browse/IGNITE-21063?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17796265#comment-17796265
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Kirill Tkalenko commented on IGNITE-21063:
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Looks good.
> Cannot create 1000 tables
> -------------------------
>
> Key: IGNITE-21063
> URL: https://issues.apache.org/jira/browse/IGNITE-21063
> Project: Ignite
> Issue Type: Bug
> Reporter: Ivan Bessonov
> Assignee: Ivan Bessonov
> Priority: Major
> Labels: ignite-3
> Fix For: 3.0.0-beta2
>
> Time Spent: 1.5h
> Remaining Estimate: 0h
>
> Fails with OOM after a while, managing to create about 500 tales locally. We
> need to research, why it happens. Is there a leak, or we simply use too much
> memory.
> Main candidate: thread-local marshallers. For some reason, we use too many
> threads, I guess? Meta-storage entries may be up to several megabytes in
> current implementation.
> We should limit the size of cached buffers, and number of threads in general.
> Shared pool (priority-queue) of pre-allocated buffers would solve the issue,
> they don't have to be thread-local. It's a bit slower, but it's not a problem
> until proven otherwise
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