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https://issues.apache.org/jira/browse/IGNITE-10913?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16829308#comment-16829308
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Anton Kurbanov commented on IGNITE-10913:
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[~Denis Chudov], LGTM, except one thing, do we really need new property
IGNITE_ENABLE_FILE_STORE_HEAP_OPTIMIZATION? Now it looks like it should be
enabled by default.
> Reduce heap occupation by
> o.a.i.i.processors.cache.persistence.file.FilePageStore instances.
> --------------------------------------------------------------------------------------------
>
> Key: IGNITE-10913
> URL: https://issues.apache.org/jira/browse/IGNITE-10913
> Project: Ignite
> Issue Type: Improvement
> Reporter: Alexei Scherbakov
> Assignee: Denis Chudov
> Priority: Major
> Fix For: 2.8
>
> Time Spent: 10m
> Remaining Estimate: 0h
>
> With large topology and large amount of caches/partitions and enabled
> persistence could be millions of FilePageStore objects in heap (for each
> partition).
> Each instance has a reference to a File (field cfgFile) storing as String
> absolute path to a partition.
> Also internal File inplementation (on example UnixFile) also allocates space
> for file path.
> I observed about 2Gb of heap space occupied by these objects in one of
> environments.
> Solution: dereference (set to null) cfgFile after object creation, create
> File object lazily on demand when needed.
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