public SettableFuture<Void> getBlockedDependencyDriver() {
    return driver.getDriverContext().getDownstreamOperator().getBlockedDependencyDriver();
  }
Update the schedule priority according to the execution context.

@param context the last execution context.
iotdb-core/datanode/src/main/java/org/apache/iotdb/db/queryengine/execution/schedule/task/DriverTask.java