ARROW-18420: Add int32_with_null_pages.parquet for page index test

[wgtmac]

This patch adds a parquet file generated by parquet-mr with following attributes:

• a single column with optional int32 type
• file is created with page index enabled
• in total 1000 values and are random generated with some nulls
• a null page has been generated by purpose

After this file has been committed, I can go ahead to finish test cases required for page index in the apache/arrow#14803

Below is the complete java code to generate the file:

package org.apache.parquet.cli.commands;

import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.fs.Path;
import org.apache.parquet.column.ParquetProperties;
import org.apache.parquet.example.data.Group;
import org.apache.parquet.example.data.simple.SimpleGroupFactory;
import org.apache.parquet.hadoop.ParquetWriter;

import org.apache.parquet.hadoop.example.GroupWriteSupport;
import org.apache.parquet.hadoop.metadata.CompressionCodecName;
import org.apache.parquet.schema.MessageType;
import org.apache.parquet.schema.PrimitiveType;
import org.apache.parquet.schema.Types;

import java.io.IOException;
import java.nio.ByteBuffer;
import java.util.Random;

public class GenerateTestFile {

    public static void main(String[] args) {
        Path path = new Path("/tmp/int32_with_null_pages.parquet");
        Configuration conf = new Configuration();

        MessageType schema = Types.buildMessage()
                .optional(PrimitiveType.PrimitiveTypeName.INT32)
                .named("int32_field")
                .named("schema");
        SimpleGroupFactory fact = new SimpleGroupFactory(schema);
        GroupWriteSupport.setSchema(schema, conf);

        try (
            ParquetWriter<Group> writer = new ParquetWriter<>(
                path,
                new GroupWriteSupport(),
                CompressionCodecName.UNCOMPRESSED,
                /*blockSize=*/1024 * 1024,
                /*pageSize=*/64,
                /*dictionaryPageSize=*/64,
                /*enableDictionary=*/false,
                /*validating=*/false,
                ParquetProperties.WriterVersion.PARQUET_1_0,
                conf)) {

            Random rnd = new Random();
            for (int i = 0; i < 1_000; ++i) {
                boolean enforceNull = 150 < i && i < 350;
                boolean enforceNotNull = 650 < i && i < 750;
                boolean randomNull = rnd.nextInt(10) == 5;
                if (enforceNull || (!enforceNotNull && randomNull)) {
                    writer.write(fact.newGroup());
                } else {
                    ByteBuffer buffer = ByteBuffer.allocate(Integer.BYTES);
                    writer.write(fact.newGroup()
                            .append("int32_field", rnd.nextInt()));
                }
            }
        } catch (IOException e) {
            throw new RuntimeException(e);
        }
    }

}

[wgtmac]

@pitrou Can you take a look please?

[pitrou]

Thanks a lot!