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https://issues.apache.org/jira/browse/IGNITE-3939?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15890257#comment-15890257
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Taras Ledkov commented on IGNITE-3939:
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In case the special {{ZERO}} offset is used for primitives or special objects
we have to make the metadata lookup on one filed unmarshaling.
It can be cause of the performance drop for SQL.
So, the special case will be implemented only for {{null}} references.
> Compact long zero values binary representation
> ----------------------------------------------
>
> Key: IGNITE-3939
> URL: https://issues.apache.org/jira/browse/IGNITE-3939
> Project: Ignite
> Issue Type: Improvement
> Components: binary
> Affects Versions: 1.7
> Reporter: Andrew Mashenkov
> Assignee: Taras Ledkov
> Fix For: 2.0
>
>
> We can use separate type for Long zero values and exclude 8-byte value from
> binary representation. This will reduce memory footprint and network load.
> Compatibility with previous versions MUST be preserved.
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