public void fill(float value) {
    for (float[] segment : array) {
      if (segment == null) {
        return;
      }
      Arrays.fill(segment, value);
    }
  }
Fills the entire big array with the specified value.
iotdb-core/datanode/src/main/java/org/apache/iotdb/db/queryengine/execution/operator/source/relational/aggregation/grouped/array/FloatBigArray.java