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Posted to issues@ignite.apache.org by "Kirill Tkalenko (Jira)" <ji...@apache.org> on 2020/12/25 14:18:00 UTC

[jira] [Commented] (IGNITE-13912) Incorrect calculation of WAL segments that should be deleted from WAL archive

    [ https://issues.apache.org/jira/browse/IGNITE-13912?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17254846#comment-17254846 ] 

Kirill Tkalenko commented on IGNITE-13912:
------------------------------------------

Hi, [~shm]!  I tried to go back to [commit|https://github.com/apache/ignite/commit/54ef8b804a6e9ec4edd95a367e19ebb768c36b07] and found that we are exceeded *DataStorageConfiguration#maxWalArchiveSize* by many times too. Previously, clearing WAL archive happened synchronously with the completion of the checkpoint, now it happens asynchronously in a separate thread, which also depends on the checkpoints. Now the mistake is that we often delete and in small portions, or we can do it less often, but delete more. 

> Incorrect calculation of WAL segments that should be deleted from WAL archive
> -----------------------------------------------------------------------------
>
>                 Key: IGNITE-13912
>                 URL: https://issues.apache.org/jira/browse/IGNITE-13912
>             Project: Ignite
>          Issue Type: Bug
>          Components: persistence
>            Reporter: Kirill Tkalenko
>            Assignee: Kirill Tkalenko
>            Priority: Critical
>             Fix For: 2.10
>
>
> Now there is an incorrect calculation of WAL segments that should be deleted from WAL archive. Since we delete only those segments whose total size should not exceed *DataStorageConfiguration#maxWalArchiveSize * IGNITE_THRESHOLD_WAL_ARCHIVE_SIZE_PERCENTAGE*, but should be up to  DataStorageConfiguration#maxWalArchiveSize * IGNITE_THRESHOLD_WAL_ARCHIVE_SIZE_PERCENTAGE*. Therefore, an excess of *DataStorageConfiguration#maxWalArchiveSize* occurs.



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