protected void buildResultTsBlock() {
    resultTsBlock =
        resultBuilder.build(
            new RunLengthEncodedColumn(TIME_COLUMN_TEMPLATE, resultBuilder.getPositionCount()));
    resultBuilder.reset();
  }
@return true if current right block is consumed up
iotdb-core/datanode/src/main/java/org/apache/iotdb/db/queryengine/execution/operator/source/relational/AbstractMergeSortJoinOperator.java