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Asked: 2022-11-21T23:52:41+05:30

Which two messages does NameNode get from DataNode?

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Which two messages does NameNode get from DataNode?

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      DataNodes provide NameNodes with information about the data in the form of messages or signals.

      The two indicators are:

      • Block report signals, which is a list of the data blocks stored on the DataNode and an explanation of how they operate.
      • DataNode’s heartbeat, which indicates it’s active and working. A recurring report helps decide whether to employ NameNode. If this signal is not sent, DataNode’s operation has apparently ceased.
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