I need inventory details as csv, there are total of 750k records and I need it in csv, Saved search is not loading in UI and getInputData() is stucked from past 15hrs. How can I do this? multiple csv works.

/** * @NApiVersion 2.1 * @NScriptType MapReduceScript */ define(['N/search', 'N/file', 'N/log'], function(search, file, log) {

  const ROW_LIMIT = 100000;
  const HEADER = [
    'Item ID',
    'Price From',
    'Wine Owner',
    'Document Number',
    'Item Rate',
    'Price - Rate Diff',
    'Status',
    'Inventory Number'
  ];

  function getInputData() {
    return search.load({
      id: 'customsearch_st_itemsaved_search_report_' 
    });
  }

  function map(context) {
    const result = JSON.parse(context.value);
    const row = [
      result.values.itemid,
      result.values.custitem_pricefrom,
      result.values.custitemwine_owner,
      result.values["tranid.transaction"],
      result.values["rate.transaction"],
      result.values.formulanumeric,
      result.values["statusref.transaction"],
      result.values["inventorynumber.inventoryDetail"]
    ];

    const csvSafe = row.map(v => `"${(v || '').toString().replace(/"/g, '""')}"`);
    context.write({
      key: 'csv',
      value: csvSafe.join(',')
    });
  }

  function reduce(context) {
    const chunkSize = ROW_LIMIT;
    const header = HEADER.join(',');
    let lines = [header];
    let part = 1;

    context.values.forEach((line, index) => {
      lines.push(line);

      if ((index + 1) % chunkSize === 0) {
        saveCSV(lines, part);
        lines = [header];
        part++;
      }
    });

    // Save last chunk if needed
    if (lines.length > 1) {
      saveCSV(lines, part);
    }
  }

  function saveCSV(lines, part) {
    const fileName = `ItemSearch_Export_${part}.csv`;
    const csvFile = file.create({
      name: fileName,
      fileType: file.Type.CSV,
      contents: lines.join('\n'),
      folder: 194669 
    });

    const fileId = csvFile.save();
    log.audit(`Saved File ${fileName}`, `File ID: ${fileId}`);
  }

  return {
    getInputData,
    map,
    reduce
  };
});