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From "Manikumar (JIRA)" <j...@apache.org>
Subject [jira] [Resolved] (KAFKA-5850) Py4JJavaError: An error occurred while calling o40.loadClass. : java.lang.ClassNotFoundException: org.apache.spark.streaming.kafka.KafkaUtilsPythonHelper
Date Tue, 09 Jan 2018 09:55:00 GMT

     [ https://issues.apache.org/jira/browse/KAFKA-5850?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Manikumar resolved KAFKA-5850.
------------------------------
    Resolution: Invalid

 Please reopen if you think the issue is related to kafka 


> Py4JJavaError: An error occurred while calling o40.loadClass. : java.lang.ClassNotFoundException:
org.apache.spark.streaming.kafka.KafkaUtilsPythonHelper
> ---------------------------------------------------------------------------------------------------------------------------------------------------------
>
>                 Key: KAFKA-5850
>                 URL: https://issues.apache.org/jira/browse/KAFKA-5850
>             Project: Kafka
>          Issue Type: Bug
>            Reporter: Saurabh Bidwai
>
> ---------------------------------------------------------------------------
> Py4JJavaError                             Traceback (most recent call last)
> <ipython-input-10-62bb7226120a> in <module>()
> ----> 1 streamer(sc)
> <ipython-input-3-99af708ed717> in streamer(sc)
>       5     pwords = load_wordlist("/home/daasuser/twitter/kafkatweets/Twitter-Sentiment-Analysis-Using-Spark-Streaming-And-Kafka/Dataset/positive.txt")
>       6     nwords = load_wordlist("/home/daasuser/twitter/kafkatweets/Twitter-Sentiment-Analysis-Using-Spark-Streaming-And-Kafka/Dataset/negative.txt")
> ----> 7     counts = stream(ssc, pwords, nwords, 600)
>       8     make_plot(counts)
> <ipython-input-9-be266104bdd8> in stream(ssc, pwords, nwords, duration)
>       1 def stream(ssc, pwords, nwords, duration):
> ----> 2     kstream = KafkaUtils.createDirectStream(ssc, topics = ['twitterstream'],
kafkaParams = {"metadata.broker.list": ["dn1001:6667","dn2001:6667","dn3001:6667","dn4001:6667"]})
>       3     tweets = kstream.map(lambda x: x[1].encode("utf-8", "ignore"))
>       4 
>       5     # Each element of tweets will be the text of a tweet.
> /usr/hdp/current/spark-client/python/lib/pyspark.zip/pyspark/streaming/kafka.py in createDirectStream(ssc,
topics, kafkaParams, fromOffsets, keyDecoder, valueDecoder, messageHandler)
>     150             if 'ClassNotFoundException' in str(e.java_exception):
>     151                 KafkaUtils._printErrorMsg(ssc.sparkContext)
> --> 152             raise e
>     153 
>     154         stream = DStream(jstream, ssc, ser).map(func)
> Py4JJavaError: An error occurred while calling o40.loadClass.
> : java.lang.ClassNotFoundException: org.apache.spark.streaming.kafka.KafkaUtilsPythonHelper
> 	at java.net.URLClassLoader.findClass(URLClassLoader.java:381)
> 	at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
> 	at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
> 	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> 	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
> 	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
> 	at java.lang.reflect.Method.invoke(Method.java:498)
> 	at py4j.reflection.MethodInvoker.invoke(MethodInvoker.java:231)
> 	at py4j.reflection.ReflectionEngine.invoke(ReflectionEngine.java:381)
> 	at py4j.Gateway.invoke(Gateway.java:259)
> 	at py4j.commands.AbstractCommand.invokeMethod(AbstractCommand.java:133)
> 	at py4j.commands.CallCommand.execute(CallCommand.java:79)
> 	at py4j.GatewayConnection.run(GatewayConnection.java:209)
> 	at java.lang.Thread.run(Thread.java:745)



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