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Why is block size large in Hadoop?

Question Posted / salman.p


Why is block size large in Hadoop?..

Answer / Ashutosh Kumar Jatav

Block size in HDFS is large (default is 128 MB) to reduce the number of small files, improve data locality for map-reduce jobs, and minimize network traffic. A larger block size means that less metadata needs to be stored, resulting in increased performance.

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