Jiang Xingbo created SPARK-24942:
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Summary: Improve cluster resource management with jobs containing
barrier stage
Key: SPARK-24942
URL: https://issues.apache.org/jira/browse/SPARK-24942
Project: Spark
Issue Type: Improvement
Components: Spark Core
Affects Versions: 3.0.0
Reporter: Jiang Xingbo
https://github.com/apache/spark/pull/21758#discussion_r205652317
We shall improve cluster resource management to address the following issues:
- With dynamic resource allocation enabled, it may happen that we acquire some
executors (but not enough to launch all the tasks in a barrier stage) and later
release them due to executor idle time expire, and then acquire again.
- There can be deadlock with two concurrent applications. Each application may
acquire some resources, but not enough to launch all the tasks in a barrier
stage. And after hitting the idle timeout and releasing them, they may acquire
resources again, but just continually trade resources between each other.
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