Taras Ledkov created IGNITE-9171:
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Summary: Use lazy mode with results pre-fetch
Key: IGNITE-9171
URL: https://issues.apache.org/jira/browse/IGNITE-9171
Project: Ignite
Issue Type: Improvement
Components: sql
Affects Versions: 2.6
Reporter: Taras Ledkov
Assignee: Taras Ledkov
Current implementation of the {{lazy}} mode always starts separate thread for
{{MapQueryLazyWorker}}. It causes excessive overhead for requests that
produces small results set.
We have to begin execute query at the {{QUERY_POOL}} thread pool and fetch
first page of the results. In case results set is bigger than one page
{{MapQueryLazyWorker}} is started and link with {{MapNodeResults}} to handle
next pages lazy.
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