[jira] [Created] (SPARK-28485) PythonBroadcast may delete the broadcast file while a Python worker still needs it

["Xiao Li (JIRA)" <ji...@apache.org>]

Xiao Li created SPARK-28485:
-------------------------------

             Summary: PythonBroadcast may delete the broadcast file while a Python worker still needs it
                 Key: SPARK-28485
                 URL: https://issues.apache.org/jira/browse/SPARK-28485
             Project: Spark
          Issue Type: Improvement
          Components: PySpark
    Affects Versions: 3.0.0
            Reporter: Xiao Li


How to reproduce:

Run "bin/pyspark --master local[1,1] --conf spark.memory.fraction=0.0001" to start PySpark and run the following codes:
{code:java}
b = sc.broadcast([100]) 
sc.parallelize([0],1).map(lambda x: 0 if x == 0 else b.value[0]).collect() sc._jvm.java.lang.System.gc()
import time time.sleep(5) 
sc._jvm.java.lang.System.gc() 
time.sleep(5) 
sc.parallelize([1],1).map(lambda x: 0 if x == 0 else b.value[0]).collect(){code}
 



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