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  1. The estimated data volume of build side needs to be under the value of "table.optimizer.runtime-filter.max-build-data-size". If the data volume of build side is too large, the building overhead will be too large, which may lead to a negative impact on job performance.
  2. The estimated data volume of probe side needs to be over the value of "table.optimizer.runtime-filter.min-probe-data-size". If the data volume on the probe side is too small, the overhead of building runtime filter is not worth it.
  3. The filtering ratio needs to be over the value of “table.optimizer.runtime-filter.min-filter-ratio-threshold”ratio”. Same as 2, a low filter rate is not worth it to build runtime filter. The filter ratio can be estimated by the following formula:

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