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| + | ====== HDFS (Hadoop Distributed File System) ====== | ||
| + | * [[Hadoop]] | ||
| + | * [[hdfs]] | ||
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| + | ** NameNode ** - master server that manages the file system namespace and regulates access to files by clients | ||
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| + | ==== About ==== | ||
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| + | From the documentation: | ||
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| + | HDFS is the primary distributed storage used by Hadoop applications. A HDFS cluster primarily consists of a NameNode that manages the file system metadata and DataNodes that store the actual data. | ||
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| + | HDFS is highly fault-tolerant and is designed to be deployed on low-cost hardware. HDFS provides high throughput access to application data and is suitable for applications that have large data sets. HDFS relaxes a few POSIX requirements to enable streaming access to file system data. | ||
