Yuan Tian created IOTDB-1383:
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Summary: Group By Level Query Process Improvement
Key: IOTDB-1383
URL: https://issues.apache.org/jira/browse/IOTDB-1383
Project: Apache IoTDB
Issue Type: Improvement
Components: Core/Engine
Reporter: Yuan Tian
Currently, the intermediate dataset is too large, we need to calculate all the
aggregation result of each series, put them all in the memory and then
calculate the final result.
Actually, we can iteratively compute the result set to save the mermory
footprint.
Also, we need to reestimate the size of group by level dataset.
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