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From "Eduard Shangareev (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (IGNITE-7754) WAL in LOG_ONLY mode doesn't execute fsync on checkpoint begin
Date Tue, 27 Mar 2018 16:39:00 GMT

    [ https://issues.apache.org/jira/browse/IGNITE-7754?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16415899#comment-16415899
] 

Eduard Shangareev commented on IGNITE-7754:
-------------------------------------------

Ivan, I have checked your code and TC state, everything is OK.

> WAL in LOG_ONLY mode doesn't execute fsync on checkpoint begin
> --------------------------------------------------------------
>
>                 Key: IGNITE-7754
>                 URL: https://issues.apache.org/jira/browse/IGNITE-7754
>             Project: Ignite
>          Issue Type: Bug
>          Components: persistence
>            Reporter: Ilya Lantukh
>            Assignee: Ivan Rakov
>            Priority: Critical
>             Fix For: 2.5
>
>         Attachments: image-2018-03-20-19-08-42-234.png, screenshot-1.png, screenshot-2.png
>
>
> On checkpoint begin method IgniteWriteAheadLogManager.fsync(WALPointer ptr) will be called,
but it won't actually perform fsync because mode isn't FSYNC. It might lead to LFS corruption
if OS or hardware failed until checkpoint had been finished.



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