@Michael Bronson In yarn master mode executors will run inside a yarn container. Spark will launch an Application Master that will be responsible of negotiating the containers with Yarn. Having that said only nodes running Nodemanager are eligible to run executors. First question: The executor logs you are looking for will be part of the yarn application logs for the container running on the specific node. (yarn logs -applicationId <appId>) Second question: Executor will notify in case heartbeat fails to reach driver for some network problem/timeout. So this should be in the executor log that is part of the application logs. HTH *** If you found this answer addressed your question, please take a moment to login and click the "accept" link on the answer.
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