liuxian created SPARK-26264:
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Summary: It is better to add @transient to field 'locs' for class
`ResultTask`.
Key: SPARK-26264
URL: https://issues.apache.org/jira/browse/SPARK-26264
Project: Spark
Issue Type: Improvement
Components: Spark Core
Affects Versions: 3.0.0
Reporter: liuxian
The field 'locs' is only used in driver side for class `ResultTask`, so it is
not needed to serialize when sending the `ResultTask` to executor.
Although it's not very big, it's very frequent, so we can add` transient` for
it like `ShuffleMapTask`
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