Tian Jiang created IOTDB-690:
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Summary: [Distributed] Turn to broadcasting when calculating
targeting nodes takes too long
Key: IOTDB-690
URL: https://issues.apache.org/jira/browse/IOTDB-690
Project: Apache IoTDB
Issue Type: Improvement
Components: Core/Cluster
Reporter: Tian Jiang
When we are querying a timeseries within one or more closed intervals, we will
extract the time partitions covered by such intervals and calculate the data
locations using the series path and the time partitions.
However, if the intervals are too long, the location calculation may take a
long time and in certain situations, it would be better to skip the calculation
and just use a broadcast, since when the intervals are long, all most all data
groups will be queried and querying those groups with no data introduce little
side-effects.
An analytical model is required to help find out in what situation, a
broadcast is better than doing the location calculation.
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