[jira] [Comment Edited] (IGNITE-14497) Move background task deletion at the end of next checkpoint

["Maria Makedonskaya (Jira)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/IGNITE-14497?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17318810#comment-17318810 ] 

Maria Makedonskaya edited comment on IGNITE-14497 at 4/12/21, 6:54 AM:
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[~sergey-chugunov] , could you pls take a look?


was (Author: makedonskaya):
[~ibessonov], could you pls take a look?

> Move background task deletion at the end of next checkpoint
> -----------------------------------------------------------
>
>                 Key: IGNITE-14497
>                 URL: https://issues.apache.org/jira/browse/IGNITE-14497
>             Project: Ignite
>          Issue Type: Bug
>            Reporter: Maria Makedonskaya
>            Assignee: Maria Makedonskaya
>            Priority: Major
>          Time Spent: 10m
>  Remaining Estimate: 0h
>
> In [1] has been described scenario of the race that makes possible a situation when information from metastore has been deleted and part of the index is still present in the storage.
> Actually, fix in [1] that has been done in slightly different way, however, it strongly decreases possibility of the race. Removal of the background task has been moved to beginning of the next checkpoint. It was done this way, because the problem was in case when node unexpectedly failed in the middle of next checkpoint and after restart task failed on check of deleted index metaPage. The check was done in [2].
> In current issue, we only move background task deletion at the end of the next checkpoint.
> [1][IGNITE-13382|https://issues.apache.org/jira/browse/IGNITE-13382]
>  [2][IGNITE-14447|https://issues.apache.org/jira/browse/IGNITE-14447]



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