我正在嘗試將數(shù)據(jù)從 Google BigQuery 加載到在 Google Dataproc 上運(yùn)行的 Spark（我正在使用 Java）。我嘗試按照此處的說明進(jìn)行操作：https ://cloud.google.com/dataproc/docs/tutorials/bigquery-connector-spark-example我收到錯(cuò)誤：“ ClassNotFoundException: Failed to find data source: bigquery。”我的 pom.xml 如下所示：<?xml version="1.0" encoding="UTF-8"?><project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">    <modelVersion>4.0.0</modelVersion>    <groupId>com.virtualpairprogrammers</groupId>    <artifactId>learningSpark</artifactId>    <version>0.0.3-SNAPSHOT</version>    <packaging>jar</packaging>    <properties>        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>        <java.version>1.8</java.version>    </properties>    <dependencies>        <dependency>            <groupId>org.apache.spark</groupId>            <artifactId>spark-core_2.11</artifactId>            <version>2.3.2</version>        </dependency>        <dependency>            <groupId>org.apache.spark</groupId>            <artifactId>spark-sql_2.11</artifactId>            <version>2.3.2</version>        </dependency>        <dependency>            <groupId>org.apache.hadoop</groupId>            <artifactId>hadoop-hdfs</artifactId>            <version>2.2.0</version>        </dependency>        <dependency>            <groupId>com.google.cloud.spark</groupId>            <artifactId>spark-bigquery_2.11</artifactId>            <version>0.9.1-beta</version>            <classifier>shaded</classifier>        </dependency>    </dependencies>將依賴項(xiàng)添加到我的 pom.xml 后，它會下載大量內(nèi)容來構(gòu)建 .jar，所以我認(rèn)為我應(yīng)該擁有正確的依賴項(xiàng)？然而，Eclipse 還警告我“從未使用過 import com.google.cloud.spark.bigquery”。