Aleksey Plekhanov created IGNITE-16315:
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Summary: Calcite engine. Query start request contains a lot of data
Key: IGNITE-16315
URL: https://issues.apache.org/jira/browse/IGNITE-16315
Project: Ignite
Issue Type: Improvement
Reporter: Aleksey Plekhanov
For simple queries SQL engine most of the time spend in writing/reading query
start requests, which contains a lot of data.
{{FragmentDescription}} class stores in communication message
{{ColocationGroup}} type (\{{target}} field), which contains cache partition
assignments (for each partition of the cache, 1024 items by default, list of
node IDs are stored). After it, {{ColocationGroup}} is stored again in
{{FragmentMapping}} class.
We need to investigate this behaviour and optimize it if possible.
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