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spark:using-python [2014/11/10 15:36]
straka 		spark:using-python [2014/11/10 15:42]
straka
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 Consider the following simple script computing 10 most frequent words of Czech Wikipedia: Consider the following simple script computing 10 most frequent words of Czech Wikipedia:
 <file python> <file python>
-(sc.textFile("/net/projects/spark-example-data/wiki-cs")+(sc.textFile("/net/projects/spark-example-data/wiki-cs", 3*sc.defaultParallelism)
    .flatMap(lambda line: line.split())    .flatMap(lambda line: line.split())
    .map(lambda word: (word, 1))    .map(lambda word: (word, 1))
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 ===== Running Python Spark Scripts ===== ===== Running Python Spark Scripts =====
  
-Python Spark scripts can be started using +Python Spark scripts can be started using: 
-  spark-submit+<file>spark-submit</file>
  
 As described in [[running-spark-on-single-machine-or-on-cluster|Running Spark on Single Machine or on Cluster]], environmental variable ''MASTER'' specifies which Spark master to use (or whether to start a local one). As described in [[running-spark-on-single-machine-or-on-cluster|Running Spark on Single Machine or on Cluster]], environmental variable ''MASTER'' specifies which Spark master to use (or whether to start a local one).
Line 56: Line 56:
        
 sc = SparkContext() sc = SparkContext()
-(sc.textFile(input)+(sc.textFile(input, 3*sc.defaultParallelism)
    .flatMap(lambda line: line.split())    .flatMap(lambda line: line.split())
    .map(lambda token: (token, 1))    .map(lambda token: (token, 1))

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