scala - Spark - 错误 : Failed to load class - spark-submit

Question

我使用 Intellij 创建 sbt 项目并将工件构建到 jar 文件。我将 jar 文件放到服务器并提交，但出现此错误:

spark-submit --master spark://master:7077 --class streaming_process spark-jar/spark-streaming.jar

Error: Failed to load class streaming_process.
21/01/23 04:41:32 INFO ShutdownHookManager: Shutdown hook called
21/01/23 04:41:32 INFO ShutdownHookManager: Deleting directory /tmp/spark-982e8fe3-9421-45bd-aced-e46c4d756054

我的代码

// Code Block 2 Starts Here
    val spark = SparkSession.builder
      .master("spark://master:7077")
      .appName("Stream Processing Application")
      .getOrCreate()

    spark.sparkContext.setLogLevel("ERROR")
    // Code Block 2 Ends Here

    // Code Block 3 Starts Here
    // Stream meetup.com RSVP Message Data from Kafka
    val meetup_rsvp_df = spark.readStream
      .format("kafka")
      .option("kafka.bootstrap.servers", kafka_bootstrap_servers)
      .option("subscribe", kafka_topic_name)
      .option("startingOffsets", "latest")
      .load()

你可以看到我的项目图片:

Answer 1

JVM 找不到包含 streaming_process 类的 jar。请使用 --jars spark-jar/spark-streaming.jar 选项。