084dca770f
## What changes were proposed in this pull request? - Fixed bug in Python API of DataStreamReader. Because a single path was being converted to a array before calling Java DataStreamReader method (which takes a string only), it gave the following error. ``` File "/Users/tdas/Projects/Spark/spark/python/pyspark/sql/readwriter.py", line 947, in pyspark.sql.readwriter.DataStreamReader.json Failed example: json_sdf = spark.readStream.json(os.path.join(tempfile.mkdtemp(), 'data'), schema = sdf_schema) Exception raised: Traceback (most recent call last): File "/System/Library/Frameworks/Python.framework/Versions/2.6/lib/python2.6/doctest.py", line 1253, in __run compileflags, 1) in test.globs File "<doctest pyspark.sql.readwriter.DataStreamReader.json[0]>", line 1, in <module> json_sdf = spark.readStream.json(os.path.join(tempfile.mkdtemp(), 'data'), schema = sdf_schema) File "/Users/tdas/Projects/Spark/spark/python/pyspark/sql/readwriter.py", line 963, in json return self._df(self._jreader.json(path)) File "/Users/tdas/Projects/Spark/spark/python/lib/py4j-0.10.1-src.zip/py4j/java_gateway.py", line 933, in __call__ answer, self.gateway_client, self.target_id, self.name) File "/Users/tdas/Projects/Spark/spark/python/pyspark/sql/utils.py", line 63, in deco return f(*a, **kw) File "/Users/tdas/Projects/Spark/spark/python/lib/py4j-0.10.1-src.zip/py4j/protocol.py", line 316, in get_return_value format(target_id, ".", name, value)) Py4JError: An error occurred while calling o121.json. Trace: py4j.Py4JException: Method json([class java.util.ArrayList]) does not exist at py4j.reflection.ReflectionEngine.getMethod(ReflectionEngine.java:318) at py4j.reflection.ReflectionEngine.getMethod(ReflectionEngine.java:326) at py4j.Gateway.invoke(Gateway.java:272) at py4j.commands.AbstractCommand.invokeMethod(AbstractCommand.java:128) at py4j.commands.CallCommand.execute(CallCommand.java:79) at py4j.GatewayConnection.run(GatewayConnection.java:211) at java.lang.Thread.run(Thread.java:744) ``` - Reduced code duplication between DataStreamReader and DataFrameWriter - Added missing Python doctests ## How was this patch tested? New tests Author: Tathagata Das <tathagata.das1565@gmail.com> Closes #13703 from tdas/SPARK-15981. |
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docs | ||
lib | ||
pyspark | ||
test_support | ||
.gitignore | ||
pylintrc | ||
run-tests | ||
run-tests.py |