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  1. Apache IoTDB
  2. IOTDB-690

[Distributed] Turn to broadcasting when calculating targeting nodes takes too long

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    • Improvement
    • Status: Open
    • Major
    • Resolution: Unresolved
    • None
    • None
    • Core/Cluster

    Description

      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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              Unassigned Unassigned
              jt2594838 Tian Jiang
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                Created:
                Updated: