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Posted to issues@ignite.apache.org by "Aleksey Plekhanov (JIRA)" <ji...@apache.org> on 2018/02/27 07:40:00 UTC
[jira] [Updated] (IGNITE-7818) Incorrect assertion in PDS page
eviction method
[ https://issues.apache.org/jira/browse/IGNITE-7818?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Aleksey Plekhanov updated IGNITE-7818:
--------------------------------------
Description:
There is an assertion in the method org.apache.ignite.internal.processors.cache.persistence.pagemem.PageMemoryImpl.Segment#removePageForReplacement:
{code:java}
assert relRmvAddr != INVALID_REL_PTR;{code}
Which seems potentially dangerous. In some rare cases, when count of interations more then 40% of allocated pages and all processed pages are aquired, the {{relRmvAddr}} variable will be uninitialized and {{AssertionException}} will be thrown. But it's a correct case and page to evict can be found later in the method {{tryToFindSequentially.}}
was:
There is assertion in the method org.apache.ignite.internal.processors.cache.persistence.pagemem.PageMemoryImpl.Segment#removePageForReplacement:
{code:java}
assert relRmvAddr != INVALID_REL_PTR;{code}
Which seems potentially dangerous. In some rare cases, when count of interations more then 40% of allocated pages and all processed pages are aquired, the {{relRmvAddr}} variable will be uninitialized and {{AssertionException}} will be thrown. But it's a correct case and page to evict can be found later in the method {{tryToFindSequentially.}}
> Incorrect assertion in PDS page eviction method
> -----------------------------------------------
>
> Key: IGNITE-7818
> URL: https://issues.apache.org/jira/browse/IGNITE-7818
> Project: Ignite
> Issue Type: Bug
> Reporter: Aleksey Plekhanov
> Priority: Major
>
> There is an assertion in the method org.apache.ignite.internal.processors.cache.persistence.pagemem.PageMemoryImpl.Segment#removePageForReplacement:
>
> {code:java}
> assert relRmvAddr != INVALID_REL_PTR;{code}
> Which seems potentially dangerous. In some rare cases, when count of interations more then 40% of allocated pages and all processed pages are aquired, the {{relRmvAddr}} variable will be uninitialized and {{AssertionException}} will be thrown. But it's a correct case and page to evict can be found later in the method {{tryToFindSequentially.}}
>
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