[KAFKA-5850] Py4JJavaError: An error occurred while calling o40.loadClass. : java.lang.ClassNotFoundException: org.apache.spark.streaming.kafka.KafkaUtilsPythonHelper

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Invalid
• Assignee: Unassigned
• Reporter: Saurabh Bidwai
• Created: 07/Sep/17 06:49
• Updated: 09/Jan/18 09:54
• Resolved: 09/Jan/18 09:54

Description

---------------------------------------------------------------------------
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)