Hyukjin Kwon created SPARK-26362:
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Summary: Remove 'spark.driver.allowMultipleContexts' to disallow
multiple Spark contexts
Key: SPARK-26362
URL: https://issues.apache.org/jira/browse/SPARK-26362
Project: Spark
Issue Type: Improvement
Components: Spark Core
Affects Versions: 3.0.0
Reporter: Hyukjin Kwon
Multiple Spark contexts are discouraged and it has been warning from 4 years
ago (see SPARK-4180).
It could cause arbitrary and mysterious error cases. (Honestly, I didn't even
know Spark allows it).
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