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https://issues.apache.org/jira/browse/IGNITE-19981?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Aleksey Plekhanov resolved IGNITE-19981.
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Resolution: Won't Fix
Looks like there is no performance boost after implementation. Benchmarks show
reduced network usage, but increased CPU usage and lower overall throughput.
> Calcite engine. Optimize mapping sending with query start request
> -----------------------------------------------------------------
>
> Key: IGNITE-19981
> URL: https://issues.apache.org/jira/browse/IGNITE-19981
> Project: Ignite
> Issue Type: Improvement
> Reporter: Aleksey Plekhanov
> Assignee: Aleksey Plekhanov
> Priority: Major
> Labels: ise
> Time Spent: 50m
> Remaining Estimate: 0h
>
> Currently we send the whole fragment mapping with query start request to each
> node, but on the node we need only local mapping (we need only set of
> partition to process by current node). If there are a lot of nodes and a lot
> of partitions - mapping can take a lot of space
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