12Dec
Fault Tolerance Enhancement OnĀ Apache Hadoop 3.0.0-alpha2 For Supporting More Than 2 NameNodes
NameNode is the most critical resource in Hadoop core cluster.Ā Once very large files loaded into the Hadoop Distributed File System (HDFS),Ā the files get broken into block-sized chunks as per the parameter configuredĀ (64 MB by default). The chunks are then stored as independent units across the data nodes in the cluster. The primary responsibility of the data nodes is toĀ hold the actual data in the form of chunkĀ and NameNode holds the information where all the chunks located/stored in the...