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What Is Meant By Heartbeat In Hdfs? |
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Answer» Data nodes and task TRACKERS send heartbeat signals to Name node and JOB tracker RESPECTIVELY to inform that they are ALIVE. If the signal is not received it would indicate PROBLEMS with the node or task tracker. Data nodes and task trackers send heartbeat signals to Name node and Job tracker respectively to inform that they are alive. If the signal is not received it would indicate problems with the node or task tracker. |
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