Sandy Ryza created SPARK-7533:
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Summary: Decrease spacing between AM-RM heartbeats.
Key: SPARK-7533
URL: https://issues.apache.org/jira/browse/SPARK-7533
Project: Spark
Issue Type: Improvement
Components: YARN
Affects Versions: 1.3.1
Reporter: Sandy Ryza
The current default of spark.yarn.scheduler.heartbeat.interval-ms is 5 seconds.
This is really long. For reference, the MR equivalent is 1 second.
To avoid noise and unnecessary communication, we could have a fast rate for
when we're waiting for executors and a slow rate for when we're just
heartbeating.
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