SongYadong created SPARK-26527:
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Summary: Let acquireUnrollMemory fail fast if required space
exceeds memory limit
Key: SPARK-26527
URL: https://issues.apache.org/jira/browse/SPARK-26527
Project: Spark
Issue Type: Improvement
Components: Spark Core
Affects Versions: 3.0.0
Reporter: SongYadong
When acquiring unroll memory from {{StaticMemoryManager}}, let it fail fast if
required space exceeds memory limit, just like acquiring storage memory.
I think this may reduce some computation and memory evicting costs especially
when required space({{numBytes}}) is very big.
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