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From "Ivan Rakov (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (IGNITE-10749) Improve speed of checkpoint finalization on binary memory recovery
Date Tue, 29 Jan 2019 11:23:00 GMT

    [ https://issues.apache.org/jira/browse/IGNITE-10749?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16754892#comment-16754892
] 

Ivan Rakov commented on IGNITE-10749:
-------------------------------------

[~DmitriyGovorukhin], I have only one comment. I believe, stripedApply and stripedApplyPage
methods can be merged in one.

> Improve speed of checkpoint finalization on binary memory recovery
> ------------------------------------------------------------------
>
>                 Key: IGNITE-10749
>                 URL: https://issues.apache.org/jira/browse/IGNITE-10749
>             Project: Ignite
>          Issue Type: Improvement
>          Components: cache
>    Affects Versions: 2.0
>            Reporter: Pavel Kovalenko
>            Assignee: Dmitriy Govorukhin
>            Priority: Major
>             Fix For: 2.8
>
>          Time Spent: 10m
>  Remaining Estimate: 0h
>
> Stopping node during checkpoint leads to binary memory recovery after node start.
> When binary memory is restored node performs checkpoint that fixes the consistent state
of the page memory.
> It happens there
> {noformat}
> org.apache.ignite.internal.processors.cache.persistence.GridCacheDatabaseSharedManager#finalizeCheckpointOnRecovery
> {noformat}
> Looking at the implementation of this method we can notice that it performs finalization
in 1 thread, which is not optimal. This process can be speed-up using parallelization of collecting
checkpoint pages like in regular checkpoints.



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