Question

我最近升级到Spark 2.3.0。我有一个现有的spark作业，该作业以前可以在spark 2.2.0上运行。我正面临AbstractMethodError的Java异常

我的简单代码：

from pyspark import SparkContext                                                                                  
from pyspark.streaming import StreamingContext                                                                    
from pyspark.streaming.kafka import KafkaUtils                                                                                                                                                                                       

 if __name__ == "__main__":                                                                                        
     print "Here it is!"                                                                                               
     sc = SparkContext(appName="Tester")                                                                           
     ssc = StreamingContext(sc, 1)

这在Spark 2.2.0上正常工作

使用Spark spark 2.3.0时，出现以下异常：

ssc = StreamingContext(sc, 1) 
  File "/usr/hdp/current/spark2-client/python/lib/pyspark.zip/pyspark/streaming/context.py", line 61, in __init__
  File "/usr/hdp/current/spark2-client/python/lib/pyspark.zip/pyspark/streaming/context.py", line 65, in _initialize_context
  File "/usr/hdp/current/spark2-client/python/lib/py4j-0.10.6-src.zip/py4j/java_gateway.py", line 1428, in __call__
  File "/usr/hdp/current/spark2-client/python/lib/py4j-0.10.6-src.zip/py4j/protocol.py", line 320, in get_return_value
py4j.protocol.Py4JJavaError: An error occurred while calling None.org.apache.spark.streaming.api.java.JavaStreamingContext.
: java.lang.AbstractMethodError
    at org.apache.spark.util.ListenerBus$class.$init$(ListenerBus.scala:35)
    at org.apache.spark.streaming.scheduler.StreamingListenerBus.<init>(StreamingListenerBus.scala:30)
    at org.apache.spark.streaming.scheduler.JobScheduler.<init>(JobScheduler.scala:57)
    at org.apache.spark.streaming.StreamingContext.<init>(StreamingContext.scala:184)
    at org.apache.spark.streaming.StreamingContext.<init>(StreamingContext.scala:76)
    at org.apache.spark.streaming.api.java.JavaStreamingContext.<init>(JavaStreamingContext.scala:130)
    at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
    at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
    at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
    at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
    at py4j.reflection.MethodInvoker.invoke(MethodInvoker.java:247)
    at py4j.reflection.ReflectionEngine.invoke(ReflectionEngine.java:357)
    at py4j.Gateway.invoke(Gateway.java:238)
    at py4j.commands.ConstructorCommand.invokeConstructor(ConstructorCommand.java:80)
    at py4j.commands.ConstructorCommand.execute(ConstructorCommand.java:69)
    at py4j.GatewayConnection.run(GatewayConnection.java:214)
    at java.lang.Thread.run(Thread.java:745)

我正在将spark-streaming-kafka-0-8_2.11-2.3.0.jar用于带有-packages选项的spark-submit命令。我尝试将spark-streaming-kafka-0-8-assembly_2.11-2.3.0.jar与--package和--jars选项一起使用。

Python version: 2.7.5

我在这里遵循了指南：https://spark.apache.org/docs/2.3.0/streaming-kafka-0-8-integration.html

spark stream kafka版本0-8在2.3.0中已弃用，但根据文档仍然存在。

我的命令如下：

spark-submit --master spark://10.183.0.41:7077 --packages org.apache.spark:spark-streaming-kafka-0-8_2.11:2.3.0  Kafka_test.py

可以肯定的是，Saprk的scala底层代码有所更改。

有人遇到过同样的问题吗？

Answer 1

https://spark.apache.org/docs/2.3.0/streaming-kafka-integration.html

kapka 0.8的支持自spark2.3.0起已弃用

使用Python在Spark 2.3.0中运行Spark Kafka流

1 个答案: