Learn how to use backup and restore, trash and undelete, erasure coding and replication, and data recovery tools to recover data from Hadoop Distributed File System (HDFS).

A storage system in cloud is well thought-out as a very big scale storage system that has independent storage servers. The service that cloud storage provides is, that can store user's data from ...

Manages a file system namespace and regulates access to files by clients; Executes file operations like opening, closing, and renaming files and directories. Determines the mapping of blocks to ...

Quantcast, an internet audience measurement and ad targeting service, processes over 20 petabytes of data per day using Apache Hadoop and its own custom file system called Quantcast File System (QFS).

Frameworks for large-scale distributed data processing, such as the Hadoop ecosystem, are at the core of the big data revolution we have experienced over the last decade. In this paper, we conduct an ...

At its core, we have MapReduce, YARN and the Hadoop Distributed File System, but the number of peripheral Apache projects that compliment Hadoop -- including Ambari, Chukwa, Avro, HBase and Mahout -- ...