Why ‘Reading‘ is done in parallel and ‘Writing‘ is not in HDFS?
Answer Posted / Kum. Gunjan Singh
In HDFS, reading is done in parallel because it can read data blocks from multiple DataNodes simultaneously. This improves the read performance. On the other hand, writing is a sequential process because when a block is being written, no other nodes should modify it until the write operation is completed to ensure data integrity.
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