環境:
openSUSE42.2
hadoop2.6.0-cdh5.10.0
spark1.6.0-cdh5.10.0
按照網上的spark安裝教程安裝完之后,啟動spark-shell,出現如下報錯:
報錯信息:
Exception in thread "main" java.lang.NoClassDefFoundError: org/apache/hadoop/fs/FSDataInputStream at org.apache.spark.deploy.SparkSubmitArguments$$anonfun$mergeDefaultSparkProperties$1.apply(SparkSubmitArguments.scala:117) at org.apache.spark.deploy.SparkSubmitArguments$$anonfun$mergeDefaultSparkProperties$1.apply(SparkSubmitArguments.scala:117) at scala.Option.getOrElse(Option.scala:120) at org.apache.spark.deploy.SparkSubmitArguments.mergeDefaultSparkProperties(SparkSubmitArguments.scala:117) at org.apache.spark.deploy.SparkSubmitArguments.<init>(SparkSubmitArguments.scala:103) at org.apache.spark.deploy.SparkSubmit$.main(SparkSubmit.scala:114) at org.apache.spark.deploy.SparkSubmit.main(SparkSubmit.scala) Caused by: java.lang.ClassNotFoundException: org.apache.hadoop.fs.FSDataInputStream at java.net.URLClassLoader.findClass(URLClassLoader.java:381) at java.lang.ClassLoader.loadClass(ClassLoader.java:424) at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:335) at java.lang.ClassLoader.loadClass(ClassLoader.java:357) ... 7 more
報錯原因:
經過各種搜狗,Stack Overflow終於發現原因:
從spark1.4以后,所有spark的編譯都是沒有將hadoop的classpath編譯進去的,所以必須在spark-env.sh中指定hadoop中的所有jar包。
具體設置如下:
在spark-evn.sh中添加
# 這里實際上就是執行一條hadoop的命令,將hadoop的classpath引一下
export export SPARK_DIST_CLASSPATH=$(${HADOOP_HOME}/bin/hadoop classpath)
具體的說明:
這里是官網上的說明
https://spark.apache.org/docs/latest/hadoop-provided.html