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What is HDFS Block size? How is it different from traditional file system block size?

User Eitanlees
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Final answer:

HDFS block size is the default unit of data storage in Hadoop, optimized for handling large amounts of data. Traditional file system block size refers to the smallest unit of data storage in a file system and is designed for general-purpose use.

Step-by-step explanation:

HDFS (Hadoop Distributed File System) Block size is the default unit of data storage in Hadoop. It is the size at which a file is divided and stored across different data nodes in a Hadoop cluster. The HDFS block size is typically large, ranging from 64 MB to 256 MB.

On the other hand, traditional file system block size refers to the smallest unit of data storage in a file system. It determines the size at which data is read from or written to disk. The traditional file system block size tends to be much smaller, usually around 4 KB to 8 KB.

The main difference between HDFS block size and traditional file system block size is their purpose and the scale of storage they operate on. HDFS block size is optimized for handling large amounts of data, facilitating efficient distributed processing in a Hadoop environment, while traditional file system block size is designed for general-purpose use in file systems.

User Junlin
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