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

Question

我正在将 Spark Streaming 与 Kafka 集成一起使用，当我运行来自 IDE 的流式应用程序处于本地模式时，一切都很好用。但是，一旦我将其提交到集群，我就会不断出现以下错误：

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

我正在使用 sbt assembly 构建我的项目。

我的 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")

我也试过使用 --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

都没有成功。有没有人有什么建议

Answer 1

您需要从 Kafka 依赖项中删除 "provided" 标志，因为它是 Spark 未提供 OOTB 的依赖项：

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"
)

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

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

apache-kafka

spark-streaming

spark-streaming-kafka