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https://issues.apache.org/jira/browse/IGNITE-2751?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Alexei Scherbakov updated IGNITE-2751:
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Comment: was deleted
(was: Benchmark source.)
> GridH2TreeIndex.getRowCount unwraps objects' values that are not used later
> ---------------------------------------------------------------------------
>
> Key: IGNITE-2751
> URL: https://issues.apache.org/jira/browse/IGNITE-2751
> Project: Ignite
> Issue Type: Bug
> Affects Versions: 1.5.0.final
> Reporter: Denis Magda
> Assignee: Alexei Scherbakov
> Priority: Critical
> Labels: community, important
> Fix For: 1.6
>
> Attachments: Benchmark.java
>
>
> If to run query like "SELECT COUNT(*) FROM table" then our implementation
> will perform a full scan filtering out entries that are not primary for a
> given node and will calculate only a number of primary ones.
> If entries are stored off-heap then both a key and value of an entry are
> unswapped, Unswapped values are not used by backup filters thus we have to
> omit unswapping of the values at all.
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