cdh集成Spark2.2后spark-shell启动报错解决

出错信息hadoop相关的包找不到。

[root@hadoop01 bin]# ./spark2-shell 
Exception in thread "main" java.lang.NoClassDefFoundError: org/apache/hadoop/fs/FSDataInputStream
    at org.apache.spark.deploy.SparkSubmitArguments$$anonfun$mergeDefaultSparkProperties$1.apply(SparkSubmitArguments.scala:124)
    at org.apache.spark.deploy.SparkSubmitArguments$$anonfun$mergeDefaultSparkProperties$1.apply(SparkSubmitArguments.scala:124)
    at scala.Option.getOrElse(Option.scala:121)
    at org.apache.spark.deploy.SparkSubmitArguments.mergeDefaultSparkProperties(SparkSubmitArguments.scala:124)
    at org.apache.spark.deploy.SparkSubmitArguments.<init>(SparkSubmitArguments.scala:110)
    at org.apache.spark.deploy.SparkSubmit$.main(SparkSubmit.scala:119)
    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
[root@hadoop01 bin]#

原因分析：Spark1.4以后，所有spark的编译都是没有将hadoop的classpath编译进去的。所以必须在spark-env.sh中指定hadoop中的所有jar包。

修改配置：在CM网页上修改Spark2.2配置，指定SPARK_DIST_CLASSPATH，然后重启过期配置。

export SPARK_DIST_CLASSPATH=$(${HADOOP_HOME}/bin/hadoop classpath)