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Posted to issues@ignite.apache.org by "Alexei Scherbakov (JIRA)" <ji...@apache.org> on 2016/05/05 12:46:12 UTC
[jira] [Commented] (IGNITE-2751) GridH2TreeIndex.getRowCount
unwraps objects' values that are not used later
[ https://issues.apache.org/jira/browse/IGNITE-2751?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15272261#comment-15272261 ]
Alexei Scherbakov commented on IGNITE-2751:
-------------------------------------------
Fix ready.
Waiting for test results on TC.
> 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
>
>
> 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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