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https://issues.apache.org/jira/browse/SPARK-50959?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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ASF GitHub Bot updated SPARK-50959:
-----------------------------------
Labels: pull-request-available (was: )
> ImportError: sys.meta_path is None, Python is likely shutting down Exception
> ignored in: <function JavaWrapper.__del__ at 0x77bbd652bb00>
> -----------------------------------------------------------------------------------------------------------------------------------------
>
> Key: SPARK-50959
> URL: https://issues.apache.org/jira/browse/SPARK-50959
> Project: Spark
> Issue Type: Bug
> Components: ML, PySpark
> Affects Versions: 4.0.0
> Reporter: Bobby Wang
> Priority: Major
> Labels: pull-request-available
>
> When I try a simple LogisticRegression demo, I found it will throw exception
> at the end
> _from pyspark.ml.classification import LogisticRegression_
> _from pyspark.ml.linalg import Vectors_
> _from pyspark.sql import SparkSession_
> _spark = SparkSession.builder.master("local[*]").getOrCreate()_
> _dataset = spark.createDataFrame(_
> _[(Vectors.dense([0.0]), 0.0),_
> _(Vectors.dense([0.4]), 1.0),_
> _(Vectors.dense([0.5]), 0.0),_
> _(Vectors.dense([0.6]), 1.0),_
> _(Vectors.dense([1.0]), 1.0)] * 10,_
> _["features", "label"])_
> _lr = LogisticRegression()_
> _model = lr.fit(dataset)_
>
> _Exception ignored in: <function JavaWrapper.__del__ at 0x70b8caf2f920>_
>
> _Traceback (most recent call last):_
> _File "/home/xxx/work.d/spark/spark-master/python/pyspark/ml/util.py", line
> 254, in wrapped_
> _File "/home/xxx/work.d/spark/spark-master/python/pyspark/ml/wrapper.py",
> line 60, in __del___
> _ImportError: sys.meta_path is None, Python is likely shutting down_
> _Exception ignored in: <function JavaWrapper.__del__ at 0x70b8caf2f920>_
> _Traceback (most recent call last):_
> _File "/home/xxx/work.d/spark/spark-master/python/pyspark/ml/util.py", line
> 254, in wrapped_
> _File "/home/xxx/work.d/spark/spark-master/python/pyspark/ml/wrapper.py",
> line 60, in __del___
> _ImportError: sys.meta_path is None, Python is likely shutting down_
>
>
> Looks like the "python shutdown" happens before __del__ function in
> JavaWrapper.
> When I remove the `@try_remote_del` from
> [https://github.com/apache/spark/blob/master/python/pyspark/ml/wrapper.py#L58]
> , the issue is still there
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