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  1. Spark
  2. SPARK-48970

Avoid using SparkSession.getActiveSession in spark ML reader/writer

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      `SparkSession.getActiveSession` is thread-local session, but spark ML reader / writer might be executed in different threads which causes `SparkSession.getActiveSession` returning None.

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            weichenxu123 Weichen Xu
            weichenxu123 Weichen Xu
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