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

["Ignite TC Bot (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/IGNITE-12048?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16902936#comment-16902936 ] 

Ignite TC Bot commented on IGNITE-12048:
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{panel:title=Branch: [pull/6756/head] Base: [master] : Possible Blockers (1)|borderStyle=dashed|borderColor=#ccc|titleBGColor=#F7D6C1}
{color:#d04437}MVCC PDS 2{color} [[tests 1|https://ci.ignite.apache.org/viewLog.html?buildId=4478842]]
* IgnitePdsMvccTestSuite2: IgniteNodeStoppedDuringDisableWALTest.test[AFTER_DISABLE_WAL] - History for base branch is absent.

{panel}
[TeamCity *--> Run :: All* Results|https://ci.ignite.apache.org/viewLog.html?buildId=4476523&buildTypeId=IgniteTests24Java8_RunAll]

> 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
>
>          Time Spent: 10m
>  Remaining Estimate: 0h
>
> 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
> Reduce test time execution (scale factor for a long-running tests)



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