java - Windows 上的 Spark - java.lang.UnsatisfiedLinkError : org. apache.hadoop.io.nativeio.NativeIO$Windows.access0

Question

在 Win10 中，在 IntelliJ 中，此路径(“C:/hive/Orders_[0-9]*.csv”)作为独立的 java Spark 作业运行时效果很好。但不作为 Spring Boot Spark 工作。似乎 Spring Boot 未检测到 native 文件系统。不知道如何解决这个问题。

Dataset<Row> DF1 = spark
                .read().format("csv")
                .option("header", "true")
                .option("delimiter", "\t")
                .load("C:/hive/Orders_[0-9]*.csv");

错误:

Error starting ApplicationContext. To display the auto-configuration report re-run your application with 'debug' enabled.
2019-09-04 21:59:27.701 ERROR [omni-ods-migration,,,] 8216 --- [           main] o.s.boot.SpringApplication               : Application startup failed

org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'odsMigrationService': Invocation of init method failed; nested exception is java.lang.UnsatisfiedLinkError: org.apache.hadoop.io.nativeio.NativeIO$Windows.access0(Ljava/lang/String;I)Z
    at org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor.postProcessBeforeInitialization(InitDestroyAnnotationBeanPostProcessor.java:137)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyBeanPostProcessorsBeforeInitialization(AbstractAutowireCapableBeanFactory.java:409)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1620)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:555)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:483)
    at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:306)
    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230)
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:302)
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:197)
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:761)
    at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:867)
    at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:543)
    at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:693)
    at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:360)
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:303)
    at org.springframework.boot.builder.SpringApplicationBuilder.run(SpringApplicationBuilder.java:134)
    at com.jcpenney.ods.OdsMigration.main(OdsMigration.java:20)
Caused by: java.lang.UnsatisfiedLinkError: org.apache.hadoop.io.nativeio.NativeIO$Windows.access0(Ljava/lang/String;I)Z
    at org.apache.hadoop.io.nativeio.NativeIO$Windows.access0(Native Method)
    at org.apache.hadoop.io.nativeio.NativeIO$Windows.access(NativeIO.java:645)
    at org.apache.hadoop.fs.FileUtil.canRead(FileUtil.java:1230)
    at org.apache.hadoop.fs.FileUtil.list(FileUtil.java:1435)
    at org.apache.hadoop.fs.RawLocalFileSystem.listStatus(RawLocalFileSystem.java:493)
    at org.apache.hadoop.fs.FileSystem.listStatus(FileSystem.java:1868)
    at org.apache.hadoop.fs.FileSystem.listStatus(FileSystem.java:1910)
    at org.apache.hadoop.fs.ChecksumFileSystem.listStatus(ChecksumFileSystem.java:678)
    at org.apache.hadoop.fs.Globber.listStatus(Globber.java:77)
    at org.apache.hadoop.fs.Globber.doGlob(Globber.java:235)
    at org.apache.hadoop.fs.Globber.glob(Globber.java:149)
    at org.apache.hadoop.fs.FileSystem.globStatus(FileSystem.java:2016)
    at org.apache.spark.deploy.SparkHadoopUtil.globPath(SparkHadoopUtil.scala:241)
    at org.apache.spark.deploy.SparkHadoopUtil.globPathIfNecessary(SparkHadoopUtil.scala:247)
    at org.apache.spark.sql.execution.datasources.DataSource$$anonfun$12.apply(DataSource.scala:383)
    at org.apache.spark.sql.execution.datasources.DataSource$$anonfun$12.apply(DataSource.scala:379)
    at scala.collection.TraversableLike$$anonfun$flatMap$1.apply(TraversableLike.scala:241)
    at scala.collection.TraversableLike$$anonfun$flatMap$1.apply(TraversableLike.scala:241)
    at scala.collection.immutable.List.foreach(List.scala:392)
    at scala.collection.TraversableLike$class.flatMap(TraversableLike.scala:241)
    at scala.collection.immutable.List.flatMap(List.scala:355)
    at org.apache.spark.sql.execution.datasources.DataSource.resolveRelation(DataSource.scala:379)
    at org.apache.spark.sql.DataFrameReader.load(DataFrameReader.scala:149)
    at org.apache.spark.sql.DataFrameReader.load(DataFrameReader.scala:132)
    at com.jcpenney.ods.service.OdsMigrationService.readHfsFile(OdsMigrationService.java:588)
    at com.jcpenney.ods.service.OdsMigrationService.processOrders(OdsMigrationService.java:334)
    at com.jcpenney.ods.service.OdsMigrationService.run(OdsMigrationService.java:129)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:498)
    at org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor$LifecycleElement.invoke(InitDestroyAnnotationBeanPostProcessor.java:366)
    at org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor$LifecycleMetadata.invokeInitMethods(InitDestroyAnnotationBeanPostProcessor.java:311)
    at org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor.postProcessBeforeInitialization(InitDestroyAnnotationBeanPostProcessor.java:134)
    ... 16 common frames omitted

当路径给出准确的文件名时，下面的代码在 Spring Boot 中也能正常工作。

Dataset<Row> DF1 = spark
                .read().format("csv")
                .option("header", "true")
                .option("delimiter", "\t")
                .load("C:/hive/Orders_000001.csv");

如何解决这个问题？

Answer 1

这是一个可能的解决方案

1. 从 https://github.com/cdarlint/winutils 下载适用于 Windows 的 Hadoop 文件
2. 提取文件(例如 C:\hadoop)。确保目录结构类似于此 C:\hadoop\bin\winutils.exe
3. 设置环境变量HADOOP_HOME至C:\hadoop
4. 将 Hadoop 添加到路径环境变量:%HADOOP_HOME%\bin
5. 复制hadoop.dll至Windows\System32 (可能没有必要)
6. 重新启动系统
7. Java 应用程序特定:将其添加到主方法中:System.setProperty ("hadoop.home.dir", "C:/hadoop/" ); System.load ("C:/hadoop/bin/hadoop.dll");

引用文献:

1. https://cwiki.apache.org/confluence/display/HADOOP2/WindowsProblems
2. https://sparkbyexamples.com/spark/spark-hadoop-exception-in-thread-main-java-lang-unsatisfiedlinkerror-org-apache-hadoop-io-nativeio-nativeiowindows-access0ljava-lang-stringiz/
3. https://blog.csdn.net/weixin_30802273/article/details/96528359