How to read gz compressed file by pyspark

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名媛妹妹
名媛妹妹 2020-12-19 02:04

I have line data in .gz compressed format. I have to read it in pyspark Following is the code snippet

rdd = sc.textFile(\"data/label.gz\").map(func)
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  •  遥遥无期
    2020-12-19 02:36

    Spark document clearly specify that you can read gz file automatically:

    All of Spark’s file-based input methods, including textFile, support running on directories, compressed files, and wildcards as well. For example, you can use textFile("/my/directory"), textFile("/my/directory/.txt"), and textFile("/my/directory/.gz").

    I'd suggest running the following command, and see the result:

    rdd = sc.textFile("data/label.gz")
    
    print rdd.take(10)
    

    Assuming that spark finds the the file data/label.gz, it will print the 10 rows from the file.

    Note, that the default location for a file like data/label.gz will be in the hdfs folder of the spark-user. Is it there?

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