AngersZhuuuu commented on issue #24909: [SPARK-28106][SQL] When Spark SQL use "add jar" , before add to SparkContext, check jar path exist first. URL: https://github.com/apache/spark/pull/24909#issuecomment-510069915 > You can use some test file system to do the unit test, there's some examples in `SparkSubmitSuite`. I check it, In SparkSubmitSuite, they only use path of hdfs/s3 to mock parameter, don't real read file or check it . And I have looked about all place in Unit test with hdfs path. They are all just mock path.
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