liuxian created SPARK-25729:
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Summary: It is better to replace `minPartitions` with
`defaultParallelism` , when `minPartitions` is less than `defaultParallelism`
Key: SPARK-25729
URL: https://issues.apache.org/jira/browse/SPARK-25729
Project: Spark
Issue Type: Improvement
Components: Spark Core
Affects Versions: 2.4.0
Reporter: liuxian
In ‘WholeTextFileRDD’，when `minPartitions` is less than `defaultParallelism`，
it is better to replace `minPartitions` with `defaultParallelism` , because
this can make better use of resources and improve concurrency.
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