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https://issues.apache.org/jira/browse/IGNITE-12131?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16919683#comment-16919683
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Andrey Gura commented on IGNITE-12131:
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[~ilyak] In my opinion, mmap is just implementation detail, so it isn't good
idea to expose it on public configuration API. There are ideas about WAL
refactoring that can lead to creation of different implementations.
> MMAP mode should be disabled by default for WAL manager
> -------------------------------------------------------
>
> Key: IGNITE-12131
> URL: https://issues.apache.org/jira/browse/IGNITE-12131
> Project: Ignite
> Issue Type: Improvement
> Reporter: Andrey Gura
> Assignee: Andrey Gura
> Priority: Major
> Fix For: 2.8
>
>
> MMAP mode has a bunch of problems (see for example
> http://www.mapdb.org/blog/mmap_files_alloc_and_jvm_crash/ )
> Users are increasingly stumbling over these issues especially in virtualized
> environments.
> MMAP should be disabled by default because it requires additional care from
> user stand point.
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