[jira] [Created] (IGNITE-10694) MVCC: Possible recycled pages leak.

[Roman Kondakov (JIRA)]

Roman Kondakov created IGNITE-10694:
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             Summary: MVCC: Possible recycled pages leak.
                 Key: IGNITE-10694
                 URL: https://issues.apache.org/jira/browse/IGNITE-10694
             Project: Ignite
          Issue Type: Bug
          Components: mvcc
            Reporter: Roman Kondakov


Let's consider the following scenario: put N items to cache and then remove all 
these N items. If you repeat this scenario two times, you expect that the same 
number of pages will be recycled each time. But for enabled MVCC this is not 
the case. Reproducers:

* 
{{PageEvictionPagesRecyclingAndReusingTest#testPagesRecyclingAndReusingMvccTxPartitioned}}
* 
{{PageEvictionPagesRecyclingAndReusingTest#testPagesRecyclingAndReusingMvccTxReplicated}}

Perhaps this is because the vacuum does not clean deleted rows completely. 
Detailed investigation is needed.



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