{"title":"Enhancing NameNode fault tolerance in Hadoop over cloud environment","authors":"Lino Abraham Varghese, V. Sreejith, S. Bose","doi":"10.1109/ICOAC.2014.7229751","DOIUrl":null,"url":null,"abstract":"Risks on user applications has significantly changed in the cloud computing infrastructure because of the failures such as server overload, network congestion, hardware faults, etc. Hadoop uses a single metadata server namely NameNode (NN) which keeps the whole file system metadata in primary memory. In Hadoop, the I/O operations associated with those credential metadata makes NameNode a Single Point of Failure. The system achieves fault tolerance by using an Observer Tool, which will continuously monitor the NN. It proactively calculates chances of any crash and in such a case system will run using the secondary NN.","PeriodicalId":325520,"journal":{"name":"2014 Sixth International Conference on Advanced Computing (ICoAC)","volume":"12 6 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2014-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"3","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"2014 Sixth International Conference on Advanced Computing (ICoAC)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/ICOAC.2014.7229751","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 3
Abstract
Risks on user applications has significantly changed in the cloud computing infrastructure because of the failures such as server overload, network congestion, hardware faults, etc. Hadoop uses a single metadata server namely NameNode (NN) which keeps the whole file system metadata in primary memory. In Hadoop, the I/O operations associated with those credential metadata makes NameNode a Single Point of Failure. The system achieves fault tolerance by using an Observer Tool, which will continuously monitor the NN. It proactively calculates chances of any crash and in such a case system will run using the secondary NN.