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https://issues.apache.org/jira/browse/IGNITE-4702?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Vladimir Ozerov closed IGNITE-4702.
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> Optimize BinaryMarshaller field reading in case all object fields are of
> fixed size
> -----------------------------------------------------------------------------------
>
> Key: IGNITE-4702
> URL: https://issues.apache.org/jira/browse/IGNITE-4702
> Project: Ignite
> Issue Type: Task
> Components: general
> Reporter: Vladimir Ozerov
> Labels: performance
> Fix For: 2.0
>
>
> In order to get field position within {{BinaryObject}} we do the following:
> 1) Lookup schema
> 2) Get field order
> 3) Find field position in order
> 4) Jump to the field
> If all object fields have fixed length, then it's body will always be of the
> same size, and relative field positions will be constant. This also
> applicable to objects having only some fields of known size, if these fields
> are on the head positions.
> We can add this information to schema and modify lookup routine as follows:
> 1) Lookup schema
> 2) Get field position by field ID immediately
> 4) Jump to the field
> This will save us from footer lookups thus decreasing overall field lookup
> time. It could be especially important for queries.
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