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From sandeep_katta <>
Subject [Spark-core] why Executors send HeartBeat to driver but not App Master
Date Fri, 02 Mar 2018 09:44:33 GMT
I want to attempt *SPARK-23545* bug,so I have some questions regarding the

I am analyzing the  communications between App Master->Driver and
Executor->Driver and found that only Executors send HeartBeat to Driver.

As per design Executor sends HearBeat to Driver for every
"spark.executor.heartbeatInterval" interval.

Why does the App Master does not have same mechanism,was there any
reason/limitation behind this ?


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