python - PySpark not initialized - Stack Overflow
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Running Hail on AWS - Help [0.1] - Hail Discussion
SOLVED: py4j.protocol.Py4JError: org.apache.spark.api.python.PythonUtils.getEncryptionEnabled does not exist in the JVM - Spark by {Examples}
![jvm-packages]mvn package failed with test error. Only one SparkContext may be running in this JVM · Issue #1361 · dmlc/xgboost · GitHub](https://avatars.githubusercontent.com/u/13935992?s=80&v=4 "jvm-packages]mvn package failed with test error. Only one SparkContext may be running in this JVM · Issue #1361 · dmlc/xgboost · GitHub")
jvm-packages]mvn package failed with test error. Only one SparkContext may be running in this JVM · Issue #1361 · dmlc/xgboost · GitHub
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Spark】报错：Only one SparkContext may be running in this JVM (see SPARK-2243)._骑着蜗牛ひ追导弹'的博客-CSDN博客
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error] Only one SparkContext may be running in this JVM
