What is heartbeat in HDFS?

DWQA QuestionsCategory: HadoopWhat is heartbeat in HDFS?
Editor Staff asked 11 months ago

What is heartbeat in HDFS?

1 Answers
Editor Staff answered 11 months ago

Heartbeat is a signal which is used between a data node and name node, and between task tracker and job tracker. If the name node or job tracker doesn’t respond to the signal then it is considered that there is some issue with data node or task tracker.