System.out.println("Schema Information");
for (VectorWrapper w : vectorContainer) {
MaterializedField field = w.getValueVector().getField();
System.out.println (String.format("name : %s, minor_type : %s, data_mode : %s",
field.toExpr(),
field.getType().getMinorType().toString(),
field.isNullable() ? "nullable":"non-nullable"
));
}
}