How many nodes can be there in a single hadoop cluster?

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Ranjith N

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A single Hadoop cluster can have **thousands of nodes**, depending on hardware and configuration.
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only single node
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"Rajesh Kumar N: Guiding Young Minds from 1 to 12 with Expertise and Care"

A Hadoop cluster can have thousands of nodes. Theoretical limit: ~4,000--10,000 nodes. Practical limit: Depends on hardware, network, and NameNode memory. Real-world: Facebook and Yahoo! run clusters with over 4,000 nodes. Key limit: NameNode memory (it stores all metadata).
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only single node
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One. You can have only a single name node in a cluster
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There is no hard-coded limit on the number of nodes in a Hadoop cluster — it largely depends on: the hardware, the network architecture, the Hadoop configuration, and operational scalability.
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There is no hard-coded limit on the number of nodes in a Hadoop cluster — it largely depends on: the hardware, the network architecture, the Hadoop configuration, and operational scalability. read less
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"Rajesh Kumar N: Guiding Young Minds from 1 to 12 with Expertise and Care"

A single Hadoop cluster can have thousands of nodes. Major production clusters (e.g., at Facebook or Yahoo) run with 4,000–10,000+ nodes, though practical limits depend on: Hardware configuration Network capacity Hadoop version and tuning Management complexity For most cases, 100–500...
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A single Hadoop cluster can have thousands of nodes. Major production clusters (e.g., at Facebook or Yahoo) run with 4,000–10,000+ nodes, though practical limits depend on: Hardware configuration Network capacity Hadoop version and tuning Management complexity For most cases, 100–500 nodes are typical for large en terprises. read less
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