Mukul Murthy created SPARK-25449:
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Summary: Don't send zero accumulators in heartbeats
Key: SPARK-25449
URL: https://issues.apache.org/jira/browse/SPARK-25449
Project: Spark
Issue Type: Task
Components: Spark Core
Affects Versions: 2.4.0
Reporter: Mukul Murthy
Heartbeats sent from executors to the driver every 10 seconds contain metrics
and are generally on the order of a few KBs. However, for large jobs with lots
of tasks, heartbeats can be on the order of tens of MBs, causing tasks to die
with heartbeat failures. We can mitigate this by not sending zero metrics to
the driver.
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