{"id":266,"date":"2021-07-12T16:57:48","date_gmt":"2021-07-12T16:57:48","guid":{"rendered":"https:\/\/www.wikitechy.com\/interview-questions\/?p=266"},"modified":"2021-09-14T09:49:28","modified_gmt":"2021-09-14T09:49:28","slug":"what-are-the-components-of-hdfs-and-yarn","status":"publish","type":"post","link":"https:\/\/www.wikitechy.com\/interview-questions\/big-data\/what-are-the-components-of-hdfs-and-yarn\/","title":{"rendered":"What are the components of HDFS and YARN ?"},"content":{"rendered":"
\n
\n

What are the components of HDFS and YARN ?<\/h2>\n<\/div>\n<\/div>\n
\n
\"components<\/div>\n<\/div>\n
\n
\n

NameNode<\/h2>\n<\/div>\n<\/div>\n
\n
\n
    \n
  • NameNode is the master node for processing metadata information for data blocks within the HDFS.<\/li>\n<\/ul>\n<\/div>\n<\/div>\n
    \n
    \n

    DataNode\/SlaveNode<\/h2>\n<\/div>\n<\/div>\n
    \n
    \n
      \n
    • DataNode is the node which acts as slave node to store the data, for processing and use by the NameNode.<\/li>\n
    • In addition to serving the client requests, the NameNode executes either of two following roles \u2013\n
        \n
      • CheckpointNode.<\/li>\n
      • BackupNode.<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/div>\n<\/div>\n
        <\/div>\n
        \n
        \"components<\/div>\n<\/div>\n
        \n
        \n

        CheckpointNode<\/h2>\n<\/div>\n<\/div>\n
        \n
        \n
          \n
        • It runs on a different host from the NameNode<\/li>\n<\/ul>\n<\/div>\n<\/div>\n
          \n
          \n

          BackupNode<\/h2>\n<\/div>\n<\/div>\n
          \n
          \n
            \n
          • It is a read-only NameNode which contains file system metadata information excluding the block locations.<\/li>\n<\/ul>\n<\/div>\n<\/div>\n
            \n
            \"Components<\/div>\n<\/div>\n
            \n
            \n

            Components of YARN<\/h2>\n<\/div>\n<\/div>\n
            \n
            \n

            ResourceManager<\/h2>\n<\/div>\n<\/div>\n
            \n
            \n
              \n
            • This component receives processing requests and accordingly allocates to respective NodeManagers depending on processing needs.<\/li>\n<\/ul>\n<\/div>\n<\/div>\n
              \n
              \n

              NodeManager<\/h2>\n<\/div>\n<\/div>\n
              \n
              \n
                \n
              • It executes tasks on each single Data Node.<\/li>\n<\/ul>\n<\/div>\n<\/div>\n
                \n
                \"Components<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"

                Answer : NameNode is the master node for processing metadata information…<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1065],"tags":[195,1150,1128,1155,1149,1162,1161,1119,360,1141,1145,203,199,214,1152,1120,1132,1154,1124,1156,1142,1153,1144,205,485,222,484,1151,1148,1123,1146,1127,1126,1125,1147,1163,1134,1160,1135,1164,1130,1165,1143,196,212,286,1122,970,366,288,367,1139,206,975,200,974,197,280,364,1129,1137,1136,1131,1166,968,216,285,1140,1159,1157,1138,1158,1121],"class_list":["post-266","post","type-post","status-publish","format-standard","hentry","category-big-data","tag-accenture-interview-questions-and-answers","tag-apache-hadoop-components","tag-apache-hadoop-core-components","tag-apache-hadoop-core-components-were-inspired-by","tag-apache-hadoop-ecosystem-components","tag-apache-hadoop-yarn","tag-apache-yarn","tag-att-interview-questions-and-answers","tag-atos-interview-questions-and-answers","tag-big-data-components","tag-big-data-ecosystem-components","tag-capgemini-interview-questions-and-answers","tag-casting-networks-india-pvt-limited-interview-questions-and-answers","tag-cgi-group-inc-interview-questions-and-answers","tag-cloudera-hadoop-components","tag-collabera-technologiesinterview-questions-and-answers","tag-components-of-hadoop-architecture-frameworks-used-for-data","tag-components-of-hadoop-ecosystem","tag-components-of-hadoop-in-big-data","tag-core-apache-components-in-hadoop","tag-core-components-of-hadoop","tag-core-hadoop-components","tag-defining-architecture-components-of-the-big-data-ecosystem","tag-dell-international-services-india-pvt-ltd-interview-questions-and-answers","tag-ernst-young-interview-questions-and-answers","tag-flipkart-interview-questions-and-answers","tag-genpact-interview-questions-and-answers","tag-hadoop-and-its-components","tag-hadoop-architecture-components","tag-hadoop-components","tag-hadoop-components-explained","tag-hadoop-ecosystem-and-their-components","tag-hadoop-ecosystem-architecture","tag-hadoop-ecosystem-components","tag-hadoop-framework-components","tag-hadoop-hdfs","tag-hadoop-yarn","tag-hadoop-yarn-architecture","tag-hadoop-yarn-tutorial","tag-hdfs","tag-hdfs-and-yarn-tutorial","tag-hdfs-architecture","tag-hdfs-components","tag-ibm-interview-questions-and-answers","tag-indecomm-global-services-interview-questions-and-answers","tag-lt-infotech-interview-questions-and-answers","tag-list-of-hadoop-components","tag-mindtree-interview-questions-and-answers","tag-netapp-interview-questions-and-answers","tag-r-systems-interview-questions-and-answers","tag-rbs-india-development-centre-pvt-ltd-interview-questions-and-answers","tag-resource-manager-in-hadoop","tag-sap-labs-india-pvt-ltd-interview-questions-and-answers","tag-tata-consultancy-service-interview-questions-and-answers","tag-tech-mahindra-interview-questions-and-answers","tag-trigent-software-interview-questions-and-answers","tag-unitedhealth-group-interview-questions-and-answers","tag-virtusa-consulting-services-pvt-ltd-interview-questions-and-answers","tag-wells-fargo-interview-questions-and-answers","tag-what-are-hdfs-and-yarn","tag-what-are-the-daemon-services-available-in-yarn","tag-what-does-yarn-stand-for","tag-what-is-apache-hadoop-yarn","tag-what-is-hdfs","tag-wipro-infotech-interview-questions-and-answers","tag-wipro-interview-questions-and-answers","tag-xoriant-solutions-pvt-ltd-interview-questions-and-answers","tag-yarn-architecture","tag-yarn-architecture-in-hadoop","tag-yarn-big-data","tag-yarn-comes-under-which-layer","tag-yarn-hadoop","tag-zs-associates-interview-questions-and-answers"],"yoast_head":"\nWhat 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