Spark-Mysql连接-不支持的主版本。次版本52.0错误_Mysql_Apache Spark

Spark-Mysql连接-不支持的主版本。次版本52.0错误

mysql apache-spark

Spark-Mysql连接-不支持的主版本。次版本52.0错误,mysql,apache-spark,Mysql,Apache Spark,我试图通过Spark提取MySQL数据，但不幸的是，我得到了以下错误。这是我的RDD示例： emp_df = sqlContext.read.format("jdbc").option("url",url).option("dbtable","employee").option("driver", 'com.mysql.jdbc.Driver').load() 错误： **Py4JJavaError: An error occurred while calling o149.load. : j

我试图通过

Spark

提取

MySQL

数据，但不幸的是，我得到了以下错误。这是我的RDD示例：

emp_df = sqlContext.read.format("jdbc").option("url",url).option("dbtable","employee").option("driver", 'com.mysql.jdbc.Driver').load()

错误：

**Py4JJavaError: An error occurred while calling o149.load. : java.lang.UnsupportedClassVersionError: com/mysql/jdbc/Driver : Unsupported major.minor version 52.0**    at java.lang.ClassLoader.defineClass1(Native Method)    at java.lang.ClassLoader.defineClass(ClassLoader.java:803)  at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)  at java.net.URLClassLoader.defineClass(URLClassLoader.java:449)     at java.net.URLClassLoader.access$100(URLClassLoader.java:71)   at java.net.URLClassLoader$1.run(URLClassLoader.java:361)   at java.net.URLClassLoader$1.run(URLClassLoader.java:355)   at java.security.AccessController.doPrivileged(Native Method)   at java.net.URLClassLoader.findClass(URLClassLoader.java:354)   at java.lang.ClassLoader.loadClass(ClassLoader.java:425)    at java.lang.ClassLoader.loadClass(ClassLoader.java:358)    at org.apache.spark.sql.execution.datasources.jdbc.DriverRegistry$.register(DriverRegistry.scala:38)    at org.apache.spark.sql.execution.datasources.jdbc.JdbcUtils$$anonfun$createConnectionFactory$1.apply(JdbcUtils.scala:45)   at org.apache.spark.sql.execution.datasources.jdbc.JdbcUtils$$anonfun$createConnectionFactory$1.apply(JdbcUtils.scala:45)   at scala.Option.foreach(Option.scala:236)   at org.apache.spark.sql.execution.datasources.jdbc.JdbcUtils$.createConnectionFactory(JdbcUtils.scala:45)   at org.apache.spark.sql.execution.datasources.jdbc.JDBCRDD$.resolveTable(JDBCRDD.scala:120)     at org.apache.spark.sql.execution.datasources.jdbc.JDBCRelation.<init>(JDBCRelation.scala:91)   at org.apache.spark.sql.execution.datasources.jdbc.DefaultSource.createRelation(DefaultSource.scala:57)     at org.apache.spark.sql.execution.datasources.ResolvedDataSource$.apply(ResolvedDataSource.scala:158)   at org.apache.spark.sql.DataFrameReader.load(DataFrameReader.scala:119)     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)     at py4j.reflection.MethodInvoker.invoke(MethodInvoker.java:231)     at py4j.reflection.ReflectionEngine.invoke(ReflectionEngine.java:381)   at py4j.Gateway.invoke(Gateway.java:259)    at py4j.commands.AbstractCommand.invokeMethod(AbstractCommand.java:133)     at py4j.commands.CallCommand.execute(CallCommand.java:79)   at py4j.GatewayConnection.run(GatewayConnection.java:209)   at java.lang.Thread.run(Thread.java:745)

**Py4JJavaError:调用o149.load时出错：java.lang.UnsupportedClassVersionError:com/mysql/jdbc/Driver:java.net.URLClassLoader.defineClass的java.lang.ClassLoader.defineClass1（本机方法）处的java.lang.ClassLoader.defineClass（ClassLoader.java:803）处的java.security.SecureClassLoader.defineClass（SecureClassLoader.java:142）处的java.lang.lang.unsupportedClassVersion52.0**（URLClassLoader.java:449）java.net.URLClassLoader.access$100（URLClassLoader.java:71）java.net.URLClassLoader$1.run（URLClassLoader.java:361）java.net.URLClassLoader$1.run（URLClassLoader.java:355）java.security.AccessController.doPrivileged（本机方法）java.net.URLClassLoader.findClass（urlcloader.java:354）java.lang.ClassLoader.loadClass（ClassLoader.java:425）org.apache.spark.sql.execution.datasources.jdbc.DriverRegistry$.register（DriverRegistry.scala:38）org.apache.spark.sql.execution.datasources.jdbc.JdbcUtils$$anonfun$createConnectionFactory$1.apply（JdbcUtils.scala:45）在org.apache.spark.sql.execution.datasources.jdbc.JdbcUtils$$anonfun$createConnectionFactory$1.apply（JdbcUtils.scala:45）在scala.Option.foreach（Option.scala:236）在org.apache.spark.sql.execution.datasources.jdbc.JdbcUtils$.createConnectionFactory（JdbcUtils.scala:45）上org.apache.spark.sql.execution.datasources.jdbc.JDBCRDD$.resolveTable（JDBCRDD.scala:120）org.apache.spark.sql.execution.datasources.jdbc.jdbc.jdbcorrelation.（jdbcorrelation.scala:91）org.apache.spark.sql.execution.datasources.jdbc.DefaultSource.createRelation（DefaultSource.scala:57）位于org.apache.spark.sql.execution.datasources.resolvedatasource$.apply（resolvedatasource.scala:158）位于org.apache.spark.sql.DataFrameReader.load（DataFrameReader.scala:119）位于sun.reflect.NativeMethodAccessorImpl.invoke0（NativeMethodAccessorImpl.invoke）（NativeMethodAccessorImpl.java:57）在py4j.reflection.MethodInvoker.invoke（MethodInvoker.java:231）的py4j.reflection.ReflectionEngine.invoke（ReflectionEngine.java:381）的py4j.Gateway.invoke（Gateway.java:259）的sun.reflect.DelegatingMethodAccessorImpl.invoke（DelegatingMethodAccessorImpl.java:43）的java.lang.reflectionMethod.ReflectionEngine（Method.java:606）中在py4j.commands.AbstractCommand.invokeMethod（AbstractCommand.java:133）在py4j.commands.CallCommand.execute（CallCommand.java:79）在py4j.GatewayConnection.run（GatewayConnection.java:209）在java.lang.Thread.run（Thread.java:745）上

这是Java版本不匹配。JDK和JRE不应该冲突。如果您使用的是JDK-1.8，请使用JRE 8

可能重复：这是因为JDK和JRE版本不匹配。.可能重复：这是因为JDK和JRE版本不匹配..我已在spark配置文件中降级mysql jdbc连接器版本并开始工作。感谢您的帮助。我已在spark配置文件中降级mysql jdbc连接器版本并开始工作。感谢您的帮助。