Spark：无法为平台加载本机hadoop库

Question

我正在尝试从Spark开始。我的库中有Hadoop（3.3.1）和Spark（3.2.2）。我已经将SPARK_HOME、PATH、HADOOP_HOME和LD_LIBRARY_PATH设置为各自的路径。我还在运行JDK 17（在终端中回声和-version工作正常）。

然而，我仍然得到以下错误：

Using Spark's default log4j profile: org/apache/spark/log4j-defaults.properties
Setting default log level to "WARN".
To adjust logging level use sc.setLogLevel(newLevel). For SparkR, use setLogLevel(newLevel).
21/10/25 17:17:07 WARN NativeCodeLoader: Unable to load native-hadoop library for your platform... using builtin-java classes where applicable
java.lang.IllegalAccessError: class org.apache.spark.storage.StorageUtils$ (in unnamed module @0x1f508f09) cannot access class sun.nio.ch.DirectBuffer (in module java.base) because module java.base does not export sun.nio.ch to unnamed module @0x1f508f09
  at org.apache.spark.storage.StorageUtils$.<init>(StorageUtils.scala:213)
  at org.apache.spark.storage.StorageUtils$.<clinit>(StorageUtils.scala)
  at org.apache.spark.storage.BlockManagerMasterEndpoint.<init>(BlockManagerMasterEndpoint.scala:110)
  at org.apache.spark.SparkEnv$.$anonfun$create$9(SparkEnv.scala:348)
  at org.apache.spark.SparkEnv$.registerOrLookupEndpoint$1(SparkEnv.scala:287)
  at org.apache.spark.SparkEnv$.create(SparkEnv.scala:336)
  at org.apache.spark.SparkEnv$.createDriverEnv(SparkEnv.scala:191)
  at org.apache.spark.SparkContext.createSparkEnv(SparkContext.scala:277)
  at org.apache.spark.SparkContext.<init>(SparkContext.scala:460)
  at org.apache.spark.SparkContext$.getOrCreate(SparkContext.scala:2690)
  at org.apache.spark.sql.SparkSession$Builder.$anonfun$getOrCreate$2(SparkSession.scala:949)
  at scala.Option.getOrElse(Option.scala:189)
  at org.apache.spark.sql.SparkSession$Builder.getOrCreate(SparkSession.scala:943)
  at org.apache.spark.repl.Main$.createSparkSession(Main.scala:106)
  ... 55 elided
<console>:14: error: not found: value spark
       import spark.implicits._
              ^
<console>:14: error: not found: value spark
       import spark.sql
              ^
Welcome to
      ____              __
     / __/__  ___ _____/ /__
    _\ \/ _ \/ _ `/ __/  '_/
   /___/ .__/\_,_/_/ /_/\_\   version 3.2.0
      /_/
         
Using Scala version 2.12.15 (OpenJDK 64-Bit Server VM, Java 17.0.1)
Type in expressions to have them evaluated.
Type :help for more information.

有没有办法解决这个问题？

Answer 1

打开终端并键入此命令--

确保在lib之后添加本机，如下所示

export HADOOP_OPTS = "-Djava.library.path=$HADOOP_HOME/lib/native"

然后保存文件并在terminal source ~/中键入此命令。巴什尔

试试这个，也许对你有帮助。

Answer 2

不支持Java 17-Spark在Java 8/11上运行（来源：https://spark.apache.org/docs/latest/).

因此，安装Java11并指向Spark。

无法为平台加载本机hadoop库的警告非常常见，并不意味着有任何问题。