[jira] [Updated] (IGNITE-12048) Bugs & tests fixes

["Dmitriy Govorukhin (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/IGNITE-12048?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Dmitriy Govorukhin updated IGNITE-12048:
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    Ignite Flags:   (was: Docs Required)

> Bugs & tests fixes
> ------------------
>
>                 Key: IGNITE-12048
>                 URL: https://issues.apache.org/jira/browse/IGNITE-12048
>             Project: Ignite
>          Issue Type: Bug
>            Reporter: Dmitriy Govorukhin
>            Assignee: Dmitriy Govorukhin
>            Priority: Major
>             Fix For: 2.8
>
>
> Page replacement can reload invalid page during checkpoint
> There is a race between {{writeCheckpointPages}} and page replacement process:
>  * Checkpointer thread begins a checkpoint
>  * Checkpointer thread calls {{getPageForCheckpoint()}}, which will copy page content *and clear dirty flag*
>  * Page replacement tries to find a page for replacement and chooses this page, the page is thrown away
>  * Before the page is written back to the store, the page is acquired again.
> As a result, an older copy of the page is brought back to memory, which causes all kinds of corruption exceptions and assertions.
> ----
> checkpointReadLock() may hang during node stop
> I got this hang during one of PDS (Indexing) runs (thread-dump is attached). 
>  The following code hang:
> {code:java}
> checkpointer.wakeupForCheckpoint(0, "too many dirty pages").cpBeginFut
>     .getUninterruptibly();
> {code}
> It looks like {{wakeupForCheckpoint}} can be called after the checkpointer is stopped and {{cpBeginFut}} will be never completed.
> ----
> Fixed ZookeeperDiscoveryCommunicationFailureTest.testCommunicationFailureResolve_CachesInfo1
> Fixed  *.testFailAfterStart



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