jingxiong zhong created SPARK-42336:
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Summary: Use OpenHashMap instead of HashMap
Key: SPARK-42336
URL: https://issues.apache.org/jira/browse/SPARK-42336
Project: Spark
Issue Type: Improvement
Components: Spark Core
Affects Versions: 3.4.0
Reporter: jingxiong zhong
In ResourceAllocator, we can use OpenHashMap instead of HashMap, which can gain
better performance.
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