HDFS

Sits on top of HDFS, which is optimized for streaming reads, not random accesses.

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While designed to work in concert, the Hadoop processing framework does not explicitly require HDFS, and sometimes other file systems are used.

Digging Deeper Into Data With Hadoop 2009

HDFS: A distributed file system that provides high throughput access to application data.

The big promise of Big Data: What you need to know today Frank J. Ohlhorst 2010

For example, most organizations will choose to use HDFS as the primary distributed file system and HBase as a database, which can store billions of rows of data.

The big promise of Big Data: What you need to know today Frank J. Ohlhorst 2010

This is where the open source Apache Hadoop project comes in, with its distributed file system (HDFS) and compute engine (MapReduce), both based on systems that Google invented.

Asking Any Question Of All Your Data Tom White 2010

Technically, Hadoop consists of two key services: reliable data storage using the Hadoop Distributed File System (HDFS) and high-performance parallel data processing using a technique called MapReduce.

The big promise of Big Data: What you need to know today Frank J. Ohlhorst 2010

HDFS provides the raw underlying storage on commodity hardware for massive datasets which may be petabytes in size, and MapReduce provides the programming model to run computations over significant portions of the dataset in parallel.

Asking Any Question Of All Your Data Tom White 2010

The deteriorating performance at HDFS played a significant role in the overall 37% decline in Harley's net income, which was $166.5 million in the third quarter on $1.42 billion in revenue.

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HDFS, as the unit is known, faces a payment of $400 million on debt due in December.

Credit Squeeze Threatens 'Hog' Sales 2008