Jia Fan created SPARK-44668:
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Summary: ObjectMapper are threadsafe, we can reuse it in Object
Key: SPARK-44668
URL: https://issues.apache.org/jira/browse/SPARK-44668
Project: Spark
Issue Type: Improvement
Components: Spark Core
Affects Versions: 3.4.1
Reporter: Jia Fan
ObjectMapper are threadsafe, we can reuse it in Object. But we create it in
trait, that's mean each object will create an ObjectMapper.
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