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https://issues.apache.org/jira/browse/IGNITE-7920?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16395366#comment-16395366
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Dmitriy Pavlov commented on IGNITE-7920:
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It is required to check if WAL iterator uses underlying buffer to read entries.
It is also required to check if some information may be cached during restore,
to avoid read twice.
> Research local crash recovery speed after stop in the middle of checkpoint
> --------------------------------------------------------------------------
>
> Key: IGNITE-7920
> URL: https://issues.apache.org/jira/browse/IGNITE-7920
> Project: Ignite
> Issue Type: Task
> Components: persistence
> Reporter: Dmitriy Pavlov
> Assignee: Dmitriy Pavlov
> Priority: Major
>
> When using Ignite as a database on one node, I observed that the recovery
> time using the WAL exceeds the time between checkpoints.
> Ignite logs message that it is restored after stopping in the middle of the
> checkpoint
> I use the frequency of CP - setCheckpointFrequency (60 * 1000), but at server
> with HDD and heavy IO load. At least 16 minutes required to restore Ignite
> after stop.
> Server monitoring states that high rate of IOPS ocurred and it is constraint
> (there is plenty of CPU/RAM)
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