Question

我一直在使用Spark 1.6和Cassandra connector 1.4.3从spark向cassandra写入数据。

现在，我们已升级到Spark 2.1.0，我尝试升级cassandra connector to 2.0.0-M3，但它返回的错误如下： -

java.lang.NoSuchMethodError： scala.reflect.api.JavaUniverse.runtimeMirror（Ljava /郎/类加载器;）Lscala /反映/ API / JavaMirrors $ JavaMirror; 在com.datastax.spark.connector.util.JavaApiHelper $ .mirror（JavaApiHelper.scala：25） at com.datastax.spark.connector.util.JavaApiHelper $ .getTypeTag（JavaApiHelper.scala：29）在com.datastax.spark.connector.util.JavaApiHelper.getTypeTag（JavaApiHelper.scala）在com.datastax.spark.connector.japi.CassandraJavaUtil.typeTag（CassandraJavaUtil.java:159）在com.datastax.spark.connector.japi.CassandraJavaUtil.mapToRow（CassandraJavaUtil.java:1172）在com.datastax.spark.connector.japi.CassandraJavaUtil.mapToRow（CassandraJavaUtil.java:1205）在com.datastax.spark.connector.japi.CassandraJavaUtil.mapToRow（CassandraJavaUtil.java:1222）在com.cisco.cmcdp.EBdoUtils.upsertToJobAuditTable（EBdoUtils.java:370）在com.cisco.cmcdp.EBdoContactPublisher.main（EBdoContactPublisher.java:245） at sun.reflect.NativeMethodAccessorImpl.invoke0（Native Method） at sun.reflect.NativeMethodAccessorImpl.invoke（NativeMethodAccessorImpl.java:57） at sun.reflect.DelegatingMethodAccessorImpl.invoke（DelegatingMethodAccessorImpl.java:43） at java.lang.reflect.Method.invoke（Method.java:606）在org.apache.spark.deploy.yarn.ApplicationMaster $$ anon $ 2.run（ApplicationMaster.scala：637）

Pom.xml：

    <!-- Spark and Spark SQL, Hive Dependencies -->
     <dependency>
        <groupId>org.apache.spark</groupId>
        <artifactId>spark-core_2.11</artifactId>
        <version>2.1.0-mapr-1703</version>
                    <exclusions>
            <exclusion>
                <groupId>com.google.guava</groupId>
                <artifactId>guava</artifactId>
            </exclusion>
        </exclusions>
    </dependency>
    <dependency>
        <groupId>org.apache.spark</groupId>
        <artifactId>spark-sql_2.11</artifactId>
        <version>2.1.0-mapr-1703</version>
                    <exclusions>
            <exclusion>
                <groupId>com.google.guava</groupId>
                <artifactId>guava</artifactId>
            </exclusion>
        </exclusions>
    </dependency>
    <dependency>
        <groupId>org.apache.spark</groupId>
        <artifactId>spark-hive_2.11</artifactId>
        <version>2.1.0-mapr-1703</version>
                    <exclusions>
            <exclusion>
                <groupId>com.google.guava</groupId>
                <artifactId>guava</artifactId>
            </exclusion>
        </exclusions>
    </dependency>
    <dependency>
        <groupId>org.apache.spark</groupId>
        <artifactId>spark-streaming_2.11</artifactId>
        <version>2.1.0-mapr-1703</version>
                    <exclusions>
            <exclusion>
                <groupId>com.google.guava</groupId>
                <artifactId>guava</artifactId>
            </exclusion>
        </exclusions>
    </dependency>


    <!--Spark Cassandra Connector -->
    <dependency>
        <groupId>com.datastax.cassandra</groupId>
        <artifactId>cassandra-driver-core</artifactId>
        <version>3.0.0</version>
        <exclusions>
            <exclusion>
                <groupId>org.xerial.snappy</groupId>
                <artifactId>snappy-java</artifactId>
            </exclusion>
            <exclusion>
                <groupId>com.google.guava</groupId>
                <artifactId>guava</artifactId>
            </exclusion>
        </exclusions>
    </dependency>

    <dependency>
        <groupId>com.datastax.cassandra</groupId>
        <artifactId>cassandra-driver-mapping</artifactId>
        <version>3.0.0</version>
        <exclusions>
            <exclusion>
                <groupId>com.google.guava</groupId>
                <artifactId>guava</artifactId>
            </exclusion>
        </exclusions>
    </dependency>

    <dependency>
        <groupId>org.apache.cassandra</groupId>
        <artifactId>cassandra-clientutil</artifactId>
        <version>2.0.0</version>

        <exclusions>
            <exclusion>
                <groupId>org.xerial.snappy</groupId>
                <artifactId>snappy-java</artifactId>
            </exclusion>
            <exclusion>
                <groupId>com.google.guava</groupId>
                <artifactId>guava</artifactId>
            </exclusion>
        </exclusions>
    </dependency>

    <dependency>
        <groupId>com.datastax.spark</groupId>
        <artifactId>spark-cassandra-connector_2.10</artifactId>
        <version>2.0.0-M3</version>
            <exclusions>
            <exclusion>
                <groupId>com.google.guava</groupId>
                <artifactId>guava</artifactId>
            </exclusion>
        </exclusions>
    </dependency>

    <dependency>
        <groupId>com.datastax.spark</groupId>
        <artifactId>spark-cassandra-connector_2.10</artifactId>
        <version>2.0.0-M3</version>
        <exclusions>
            <exclusion>
                <groupId>com.google.guava</groupId>
                <artifactId>guava</artifactId>
            </exclusion>
        </exclusions>
    </dependency>

请建议Cassandra连接器的适当方式和版本。

此致 RISHABH

Answer 1

此问题主要是由于使用了不适当的Scala版本，您可能在类路径中混合使用Scala 2.10和Scala 2.11库。确保您使用的是Spark 2.x，Spark Cassandra Connector 2.x和Scala 2.11（虽然支持Scala 2.10，但最好使用Scala 2.11）。看看下面的工作maven配置 -

    <dependency>
        <groupId>org.apache.spark</groupId>
        <artifactId>spark-core_2.11</artifactId>
        <version>2.1.0</version>
        <exclusions>
            <exclusion>
                <groupId>commons-codec</groupId>
                <artifactId>commons-codec</artifactId>
            </exclusion>
        </exclusions>
    </dependency>
    <dependency>
        <groupId>org.apache.spark</groupId>
        <artifactId>spark-sql_2.11</artifactId>
        <version>2.1.1</version>
        <exclusions>
            <exclusion>
                <groupId>commons-codec</groupId>
                <artifactId>commons-codec</artifactId>
            </exclusion>
        </exclusions>
    </dependency>
    <dependency>
        <groupId>org.apache.spark</groupId>
        <artifactId>spark-streaming_2.11</artifactId>
        <version>2.1.1</version>
    </dependency>
    <dependency>
        <groupId>com.datastax.spark</groupId>
        <artifactId>spark-cassandra-connector_2.11</artifactId>
        <version>2.0.1</version>
    </dependency>   
    <dependency>
        <groupId>commons-codec</groupId>
        <artifactId>commons-codec</artifactId>
        <version>1.10</version>
    </dependency>

我希望它有所帮助。

java.lang.NoSuchMethodError：scala.reflect.api.JavaUniverse.runtimeMirror（Ljava / lang / ClassLoader;）：Sparkcassandra连接器

1 个答案: