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Hadoop Distributed File Systems

HDFS is based on the idea that the most efficient data processing pattern is write-once write-many times.

Can I give a real-time example of how HDFS records once and is ready many times? I wanted to deeply understand these basic concepts.

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HDFS applications need a write-once read-only access model for files. The file that was created, written, and closed does not need to be changed. This assumption simplifies data consistency issues and provides access to high-performance data. The MapReduce application or web crawler application is ideal for this model. (Source: HDFS Design )

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