3 examples of 'pyspark join' in Python

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137def test_rightOuterJoin():
138 rdd1 = pysparkling.Context().parallelize([(0, 1), (1, 1)])
139 rdd2 = pysparkling.Context().parallelize([(2, 1), (1, 3)])
140 j = rdd1.rightOuterJoin(rdd2)
141 assert dict(j.collect())[1][1] == 3
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438def __init__(self, left_rdd, keyspace, table):
439 super(CassandraJoinRDD, self).__init__(left_rdd.ctx, keyspace, table)
440 self.crdd = self._helper\
441 .joinWithCassandraTable(left_rdd._jrdd, keyspace, table)
352def join(self, other, numPartitions=None):
353 """
354 Return a new DStream by applying 'join' between RDDs of this DStream and
355 `other` DStream.
356
357 Hash partitioning is used to generate the RDDs with `numPartitions`
358 partitions.
359 """
360 if numPartitions is None:
361 numPartitions = self._sc.defaultParallelism
362 return self.transformWith(lambda a, b: a.join(b, numPartitions), other)

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