What do you mean by Map-Reduce programming? MapReduce is a programming model designed for processing large volumes of data in parallel by dividing the work into a set of independent tasks. The MapReduce programming model is inspired by functional languages…
Come impostare Hadoop sul singolo nodo nodo e multi?
Verrà descritta la configurazione Hadoop su singolo nodo e il nodo più. The Hadoop environment setup and configuration will be described in details. Per prima cosa è necessario scaricare il seguente software (rpm). Java JDK RPM Apache Hadoop 0.20.204.0 RPM A) Single…
Che cosa è Apache Sqoop e come usarlo per importare / esportare i dati da file system Hadoop Distributed?
Apache Sqoop è uno strumento utilizzato per trasferire dati da / verso file system distribuito Hadoop. Hadoop architettura in grado di elaborare i dati BIG e conservarla in HDFS. But if we want to use that data then we need to use some tool…
What is Hadoop Streaming?
Anni : Hadoop streaming is a powerful utility which comes with Hadoop distribution.The basic concept of Hadoop framework is to split the job,process it in parallel and then join it back to get the end result.So there are two main…
What is Map/Reduce in Hadoop?
Anni : Processing vast amount of data (multi-terabyte data-sets) is a major concern in real life projects.As the size of data is increasing day by day, applications are finding it difficult to process it in a reliable,secured and fault-tolerant way.…