{"id":740,"date":"2022-12-17T13:12:39","date_gmt":"2022-12-17T13:12:39","guid":{"rendered":"https:\/\/exampracticetests.com\/aws\/Data_Analytics-Specialty_DAS-C01\/aws-certified-data-analytics-specialty-das-c01-question054\/"},"modified":"2022-12-17T13:12:39","modified_gmt":"2022-12-17T13:12:39","slug":"aws-certified-data-analytics-specialty-das-c01-question054","status":"publish","type":"post","link":"https:\/\/exampracticetests.com\/aws\/Data_Analytics-Specialty_DAS-C01\/aws-certified-data-analytics-specialty-das-c01-question054\/","title":{"rendered":"AWS Certified Data Analytics &#8211; Specialty DAS-C01 &#8211; Question054"},"content":{"rendered":"<div class=\"question\">A company stores Apache Parquet-formatted files in Amazon S3. The company uses an AWS Glue Data Catalog to store the table metadata and Amazon Athena to query and analyze the data. The tables have a large number of partitions. The queries are only run on small subsets of data in the table. A data analyst adds new time partitions into the table as new data arrives. The data analyst has been asked to reduce the query runtime.<br \/>\nWhich solution will provide the MOST reduction in the query runtime?<br \/><strong><br \/>A.<\/strong> Convert the Parquet files to the .csv file format. Then attempt to query the data again.<br \/><strong>B.<\/strong> Convert the Parquet files to the Apache ORC file format. Then attempt to query the data again.<br \/><strong>C.<\/strong> Use partition projection to speed up the processing of the partitioned table.<br \/><strong>D.<\/strong> Add more partitions to be used over the table. Then filter over two partitions and put all columns in the WHERE clause.<\/div>\n<p><\/p>\n<style> .hidden-div{ display:none } <\/style>\n<p>\t\t\t\t\t\t\t<button onclick=\"getElementById('hidden-div').style.display = 'block'\"> Show Answer <\/button> <button onclick=\"getElementById('hidden-div').style.display = 'none'\">Hide Answer<\/button><\/p>\n<div class=\"hidden-div\" id=\"hidden-div\"><span style=\"\"><\/p>\n<div class=\"answer\">Correct Answer: <strong>A<\/strong><\/div>\n<p><\/strong><\/span> <\/div>\n","protected":false},"excerpt":{"rendered":"<p>A company stores Apache Parquet-formatted files in Amazon S3. The company uses an AWS Glue Data Catalog to store the table metadata and Amazon Athena to query and analyze the data. The tables have a large number of partitions. The queries are only run on small subsets of data in the table. A data analyst [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[2],"tags":[3,221],"class_list":["post-740","post","type-post","status-publish","format-standard","hentry","category-aws-certified-data-analytics-specialty-das-c01","tag-aws-certified-data-analytics-specialty-das-c01","tag-question-054"],"aioseo_notices":[],"_links":{"self":[{"href":"https:\/\/exampracticetests.com\/aws\/Data_Analytics-Specialty_DAS-C01\/wp-json\/wp\/v2\/posts\/740","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/exampracticetests.com\/aws\/Data_Analytics-Specialty_DAS-C01\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/exampracticetests.com\/aws\/Data_Analytics-Specialty_DAS-C01\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/exampracticetests.com\/aws\/Data_Analytics-Specialty_DAS-C01\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/exampracticetests.com\/aws\/Data_Analytics-Specialty_DAS-C01\/wp-json\/wp\/v2\/comments?post=740"}],"version-history":[{"count":0,"href":"https:\/\/exampracticetests.com\/aws\/Data_Analytics-Specialty_DAS-C01\/wp-json\/wp\/v2\/posts\/740\/revisions"}],"wp:attachment":[{"href":"https:\/\/exampracticetests.com\/aws\/Data_Analytics-Specialty_DAS-C01\/wp-json\/wp\/v2\/media?parent=740"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/exampracticetests.com\/aws\/Data_Analytics-Specialty_DAS-C01\/wp-json\/wp\/v2\/categories?post=740"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/exampracticetests.com\/aws\/Data_Analytics-Specialty_DAS-C01\/wp-json\/wp\/v2\/tags?post=740"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}