cd20355078
The existing test suite has a lot of duplicate code and doesn't even cover the most fundamental feature of the HeartbeatReceiver, which is expiring hosts that have not responded in a while. This introduces manual clocks in `HeartbeatReceiver` and makes it respond to heartbeats only for registered executors. A few internal messages are moved to `receiveAndReply` to increase determinism of the tests so we don't have to rely on flaky constructs like `eventually`. Author: Andrew Or <andrew@databricks.com> Closes #7173 from andrewor14/heartbeat-receiver-tests and squashes the following commits: 4a903d6 [Andrew Or] Increase HeartReceiverSuite coverage and clean up |
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