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Posted to issues@ignite.apache.org by "Maxim Muzafarov (Jira)" <ji...@apache.org> on 2019/10/08 13:52:00 UTC

[jira] [Commented] (IGNITE-9720) Initialize partition free lists lazily

    [ https://issues.apache.org/jira/browse/IGNITE-9720?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16946902#comment-16946902 ] 

Maxim Muzafarov commented on IGNITE-9720:
-----------------------------------------

[~agoncharuk] [~jokser] [~sboikov]

Folks, any updates here? Can we proceed with this patch?


> Initialize partition free lists lazily
> --------------------------------------
>
>                 Key: IGNITE-9720
>                 URL: https://issues.apache.org/jira/browse/IGNITE-9720
>             Project: Ignite
>          Issue Type: Task
>            Reporter: Alexey Goncharuk
>            Assignee: Semen Boikov
>            Priority: Major
>              Labels: performance
>             Fix For: 2.8
>
>
> When persistence is enabled, partition free lists metadata may take quite a lot of pages.
> This results in a very long start time because {{GridCacheOffheapManager.GridCacheDataStore#init0}} will read all metadata for free list in each partition on exchange start (this is done in the {{CacheFreeListImpl}} constructor)
> We should only read required information on exchange and defer actual free list initialization to the first access.



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