Spark Streaming Kafka java.lang.ClassNotFoundException：org.apache.kafka.common.serialization.StringDeserializer

Question

我正在使用与Kafka集成的Spark流，当我在本地模式下从我的IDE运行流应用程序时，一切都可以作为魅力。但是当我将其提交到群集我保持具有以下错误：

java.lang.ClassNotFoundException: org.apache.kafka.common.serialization.StringDeserializer

我使用SBT组件来构建我的项目。

我SBT是这样的：

libraryDependencies ++= Seq(
    "org.apache.spark" % "spark-streaming-kafka-0-10_2.11" % "2.2.0" % Provided, 
    "org.apache.spark" % "spark-core_2.11" % "2.2.0" % Provided, 
    "org.apache.spark" % "spark-streaming_2.11" % "2.2.0" % Provided, 
    "org.marc4j" % "marc4j" % "2.8.2", 
    "net.sf.saxon" % "Saxon-HE" % "9.7.0-20" 
) 


run in Compile := Defaults.runTask(fullClasspath in Compile, mainClass in (Compile, run), runner in (Compile, run)).evaluated 


mainClass in assembly := Some("EstimatorStreamingApp") 

我也试过用--package选项

尝试1

--packages org.apache.spark:spark-streaming-kafka-0-10_2.11:2.2.0 

尝试2

--packages org.apache.spark:spark-streaming-kafka-0-10-assembly_2.11:2.2.0 

所有没有成功。有没有人有什么建议

Answer 1

您需要从卡夫卡的依赖去掉“规定”的标志，因为它不是与星火提供开箱即用的依赖：

libraryDependencies ++= Seq(
    "org.apache.spark" % "spark-streaming-kafka-0-10_2.11" % "2.2.0", 
    "org.apache.spark" % "spark-core_2.11" % "2.2.0" % Provided, 
    "org.apache.spark" % "spark-streaming_2.11" % "2.2.0" % Provided, 
    "org.marc4j" % "marc4j" % "2.8.2", 
    "net.sf.saxon" % "Saxon-HE" % "9.7.0-20" 
)