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From "Vladimir Ozerov (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (IGNITE-8486) Update ConcurrentLinkedDeque in Ignite's master repository to the latest JDK version
Date Thu, 27 Sep 2018 09:08:00 GMT

    [ https://issues.apache.org/jira/browse/IGNITE-8486?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16629994#comment-16629994
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Vladimir Ozerov commented on IGNITE-8486:
-----------------------------------------

Moved to 2.8 due to inactivity. Please feel free to move back if you will be able to complete
the ticket by AI 2.7 code freeze date, September 30, 2018.

> Update ConcurrentLinkedDeque in Ignite's master repository to the latest JDK version
> ------------------------------------------------------------------------------------
>
>                 Key: IGNITE-8486
>                 URL: https://issues.apache.org/jira/browse/IGNITE-8486
>             Project: Ignite
>          Issue Type: Improvement
>            Reporter: Stanislav Lukyanov
>            Assignee: Stanislav Lukyanov
>            Priority: Major
>             Fix For: 2.8
>
>         Attachments: jsr166-to-ignite.diff
>
>
> Ignite still uses copies of several JSR 166 (j.u.concurrent) classes in it's sources.
Those copies are now outdated compared to the latest versions used in JDK.
> In particular, `ConcurrentLinkedDeque` has received a couple of correctness fixes recently
(https://bugs.openjdk.java.net/browse/JDK-8188900, https://bugs.openjdk.java.net/browse/JDK-8189387).
It would be good to have them in Ignite as well to protect ourselves from possible issues.
> The task is to update Ignite's `ConcurrentLinkedDeque8` to the latest version of `ConcurrentLinkedDeque`,
although keeping compatibility with earlier Java version (e.g. JDK's version now uses Java
9's VarHandles which we can't use yet).



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