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https://issues.apache.org/jira/browse/IGNITE-12131?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16920777#comment-16920777
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Ilya Kasnacheev commented on IGNITE-12131:
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To the contrary, I think this is not just implementation detail, but a setting
relevant to performance tuning and/or functionality. As such, it should be
accessible.
In my opinion, if we ever have both 'mmap' and 'no mmap', we should introduce a
configuration setting.
If we drop either one, it's not needed :)
> 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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