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https://issues.apache.org/jira/browse/IGNITE-8481?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Dmitriy Pavlov updated IGNITE-8481:
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Fix Version/s: (was: 2.6)
2.7
> VisorValidateIndexesJob works very slowly in case of many partitions/keys for
> each partition.
> ---------------------------------------------------------------------------------------------
>
> Key: IGNITE-8481
> URL: https://issues.apache.org/jira/browse/IGNITE-8481
> Project: Ignite
> Issue Type: Bug
> Affects Versions: 2.5
> Reporter: Alexei Scherbakov
> Priority: Major
> Fix For: 2.7
>
> Attachments: ignite.zip, thrdump-server.log
>
>
> I tried to validate indexes using newly introduced VisorValidateIndexesTask
> from control.sh and found what on large data set it works very slowly.
> Process was not finished for 12 hours from start.
> Looking through a thread dump I've noticed following problems:
> 1. ValidateIndexesClosure works not in optimal way by doing btree lookup for
> each index for each entry of each partition. It should be faster to validate
> by scanning index tree.
> 2. Thread dump shows contention on acquiring segment read lock by worker
> pool-XXX threads, but no obvious reason for holding write lock (no load on
> grid)
> 3.
> org.apache.ignite.internal.processors.cache.persistence.pagemem.PageMemoryImpl.Segment#partGeneration
> generates garbage on each page access.
> Check attachment for log and thread dump.
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