Sanket Reddy created SPARK-31788:
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Summary: Cannot convert org.apache.spark.api.java.JavaPairRDD to
org.apache.spark.api.java.JavaRDD
Key: SPARK-31788
URL: https://issues.apache.org/jira/browse/SPARK-31788
Project: Spark
Issue Type: Bug
Components: Spark Core
Affects Versions: 3.0.0, 3.0.1
Reporter: Sanket Reddy
Pair RDD conversion seems to have issues
SparkSession available as 'spark'.
>>> rdd1 = sc.parallelize([1,2,3,4,5])
>>> rdd2 = sc.parallelize([6,7,8,9,10])
>>> pairRDD1 = rdd1.zip(rdd2)
>>> unionRDD1 = sc.union([pairRDD1, pairRDD1])
Traceback (most recent call last): File "<stdin>", line 1, in <module> File
"/home/gs/spark/latest/python/pyspark/context.py", line 870,
in union jrdds[i] = rdds[i]._jrdd
File
"/home/gs/spark/latest/python/lib/py4j-0.10.9-src.zip/py4j/java_collections.py",
line 238, in _setitem_ File
"/home/gs/spark/latest/python/lib/py4j-0.10.9-src.zip/py4j/java_collections.py",
line 221,
in __set_item File
"/home/gs/spark/latest/python/lib/py4j-0.10.9-src.zip/py4j/protocol.py", line
332, in get_return_value py4j.protocol.Py4JError: An error occurred while
calling None.None. Trace: py4j.Py4JException: Cannot convert
org.apache.spark.api.java.JavaPairRDD to org.apache.spark.api.java.JavaRDD at
py4j.commands.ArrayCommand.convertArgument(ArrayCommand.java:166) at
py4j.commands.ArrayCommand.setArray(ArrayCommand.java:144) at
py4j.commands.ArrayCommand.execute(ArrayCommand.java:97) at
py4j.GatewayConnection.run(GatewayConnection.java:238) at
java.lang.Thread.run(Thread.java:748)
>>> rdd3 = sc.parallelize([11,12,13,14,15])
>>> pairRDD2 = rdd3.zip(rdd3)
>>> unionRDD2 = sc.union([pairRDD1, pairRDD2])
Traceback (most recent call last): File "<stdin>", line 1, in <module> File
"/home/gs/spark/latest/python/pyspark/context.py", line 870, in union jrdds[i]
= rdds[i]._jrdd File
"/home/gs/spark/latest/python/lib/py4j-0.10.9-src.zip/py4j/java_collections.py",
line 238, in _setitem_ File
"/home/gs/spark/latest/python/lib/py4j-0.10.9-src.zip/py4j/java_collections.py",
line 221, in __set_item File
"/home/gs/spark/latest/python/lib/py4j-0.10.9-src.zip/py4j/protocol.py", line
332, in get_return_value py4j.protocol.Py4JError: An error occurred while
calling None.None. Trace: py4j.Py4JException: Cannot convert
org.apache.spark.api.java.JavaPairRDD to org.apache.spark.api.java.JavaRDD at
py4j.commands.ArrayCommand.convertArgument(ArrayCommand.java:166) at
py4j.commands.ArrayCommand.setArray(ArrayCommand.java:144) at
py4j.commands.ArrayCommand.execute(ArrayCommand.java:97) at
py4j.GatewayConnection.run(GatewayConnection.java:238) at
java.lang.Thread.run(Thread.java:748)
>>> rdd4 = sc.parallelize(range(5))
>>> pairRDD3 = rdd4.zip(rdd4)
>>> unionRDD3 = sc.union([pairRDD1, pairRDD3])
>>> unionRDD3.collect() [(1, 6), (2, 7), (3, 8), (4, 9), (5, 10), (0, 0), (1,
>>> 1), (2, 2), (3, 3), (4, 4)]
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