下面列出了怎么用org.apache.spark.sql.vectorized.ColumnarMap的API类实例代码及写法，或者点击链接到github查看源代码。
@Override
public ColumnarMap getMap(int rowId) {
/**
* BigQuery does not support Map type but this function needs to be overridden since this
* class extends an abstract class
*/
throw new UnsupportedOperationException();
}
@Override
public ColumnarMap getMap(int rowId) {
throw new UnsupportedOperationException();
}
@Override
public ColumnarMap getMap(int rowId) {
throw new UnsupportedOperationException("Unsupported type - map");
}
@Override
public ColumnarMap getMap(int ordinal) {
throw new UnsupportedOperationException();
}