NameNode (NN) NN holds the metadata of the files in HDFS, maintains the entire metadata in RAM It is important to run NN from a machine that has lots of RAM at its disposal. The higher the number of files in HDFS, the higher the consumption of RAM In case the […]
hadoop
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This will add a quick note on how to install necessary Hadoop ecosystem by Installing Apache BigTop for Hadoop Development. Remember that we need a 64-bit OS to be able to run Big Data project. First, add a new repo. The latest BigTop repo (0.8.0) is located at http://www.apache.org/dist/bigtop/bigtop-0.8.0/repos/ and we just […]