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From "Ivan Pavlukhin (JIRA)" <j...@apache.org>
Subject [jira] [Updated] (IGNITE-11289) BPlusTree.AbstractForwardCursor can use obsolete page
Date Mon, 11 Feb 2019 12:11:00 GMT

     [ https://issues.apache.org/jira/browse/IGNITE-11289?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel

Ivan Pavlukhin updated IGNITE-11289:
    Affects Version/s: 2.7

> BPlusTree.AbstractForwardCursor can use obsolete page
> -----------------------------------------------------
>                 Key: IGNITE-11289
>                 URL: https://issues.apache.org/jira/browse/IGNITE-11289
>             Project: Ignite
>          Issue Type: Bug
>          Components: cache
>    Affects Versions: 2.7
>            Reporter: Ivan Pavlukhin
>            Priority: Major
> There is a possibility that {{AbstractForwardCursor.nextPageId}} refers to a page which
was already excluded from the tree. The problem reproduces with a scan query execution with
put/remove load in background.
> Linked PR contains a reproducer and some tricks allowing to reproduce the problem more
often (it is still possible to reproduce it without tricks but likelihood is significantly
lower). The problem becomes evident when a problematic page is taken from REUSE_BUCKET. But
there could be other hidden problems which do not cause any runtime errors but lead to data

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