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CDH5已集成Spark2.2,spark-shell启动报错:
[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$AppClassLoader.loadClass(Launcher.java:335)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
... 7 more
[root@hadoop01 bin]#
原因分析:Spark1.4以后,所有spark的编译都是没有将hadoop的classpath编译进去的。所以必须在spark-env.sh中指定hadoop中的所有jar包。
解决:去CM网页上修改Spark2.2配置,指定SPARK_DIST_CLASSPATH,然后重启过期配置。
export SPARK_DIST_CLASSPATH=$(${HADOOP_HOME}/bin/hadoop classpath)
再次启动spark-shell,报错已经不存在了
[root@hadoop01 bin]# ./spark2-shell
Setting default log level to "WARN".
To adjust logging level use sc.setLogLevel(newLevel). For SparkR, use setLogLevel(newLevel).
Spark context Web UI available at http://192.168.1.8:4040
Spark context available as 'sc' (master = local[*], app id = local-1542104414574).
Spark session available as 'spark'.
Welcome to
____ __
/ __/__ ___ _____/ /__
_\ \/ _ \/ _ `/ __/ '_/
/___/ .__/\_,_/_/ /_/\_\ version 2.1.0.cloudera2
/_/
Using Scala version 2.11.8 (Java HotSpot(TM) 64-Bit Server VM, Java 1.8.0_151)
Type in expressions to have them evaluated.
Type :help for more information.
scala> :q
[root@hadoop01 bin]#
参考官网: https://spark.apache.org/docs/latest/hadoop-provided.html