java.lang.ClassNotFoundException: URLCat

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tip

This might be an issue with the file location in the Spark submit command. Try it with "spark-submit --master spark://master:7077 hello_world_from_pyspark.py {file location}"

tip

Check if you've set a name in Application -> Run. If you didn't, the generated XML is gonna have missing information and then this exception will be thrown.

tip

A few things cause this exception: 1) Check if you have all jars and if they're in the correct path when running. 2) Your classpath might be broken, you can define it in the command line with "java -cp yourClassPath" or at your IDE if you're using one.

tip

Needs to add netty-transport-native-epoll with a OS classifier to the classpath, it's not included in netty-all

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  • Running Java classes in Hadoop
    via Stack Overflow by Hamza Al Omari
    ,
  • command line interface is failing when i tried to load 1gb file. I tried to increase the memory using command line I am getting fallowing error. can you please advice how i can work around it? [root@bda1node03 forecast]# flags="-Xmx2048m" kite-dataset csv-import AccuWeatherForecast11222015.csv ctest1 Exception in thread "main" java.lang.ClassNotFoundException: -Xmx2048m at java.net.URLClassLoader.findClass(URLClassLoader.java:381) at java.lang.ClassLoader.loadClass(ClassLoader.java:424) at java.lang.ClassLoader.loadClass(ClassLoader.java:357) at java.lang.Class.forName0(Native Method) at java.lang.Class.forName(Class.java:348) at org.apache.hadoop.util.RunJar.run(RunJar.java:214) at org.apache.hadoop.util.RunJar.main(RunJar.java:136) ---------------------------------------------------------------------------- Exception in thread "main" java.lang.OutOfMemoryError: Java heap space: failed reallocation of scalar replaced objects at java.util.Arrays.copyOfRange(Arrays.java:3664) at java.lang.String.<init>(String.java:201) at java.lang.StringBuilder.toString(StringBuilder.java:407) at au.com.bytecode.opencsv.CSVParser.parseLine(CSVParser.java:250) at au.com.bytecode.opencsv.CSVParser.parseLineMulti(CSVParser.java:174) at au.com.bytecode.opencsv.CSVReader.readNext(CSVReader.java:237) at org.kitesdk.data.spi.filesystem.CSVFileReader.advance(CSVFileReader.java:174) at org.kitesdk.data.spi.filesystem.CSVFileReader.next(CSVFileReader.java:168) at org.kitesdk.shaded.com.google.common.collect.Iterators$7.computeNext(Iterators.java:648) at org.kitesdk.shaded.com.google.common.collect.AbstractIterator.tryToComputeNext(AbstractIterator.java:143) at org.kitesdk.shaded.com.google.common.collect.AbstractIterator.hasNext(AbstractIterator.java:138) at org.kitesdk.data.spi.filesystem.MultiFileDatasetReader.hasNext(MultiFileDatasetReader.java:125) at com.google.common.collect.Lists.newArrayList(Lists.java:138) at com.google.common.collect.ImmutableList.copyOf(ImmutableList.java:256) at com.google.common.collect.ImmutableList.copyOf(ImmutableList.java:217) at org.apache.crunch.impl.mem.collect.MemCollection.<init>(MemCollection.java:79) at org.apache.crunch.impl.mem.MemPipeline.read(MemPipeline.java:166) at org.apache.crunch.impl.mem.MemPipeline.read(MemPipeline.java:157) at org.kitesdk.tools.TransformTask.run(TransformTask.java:135) at org.kitesdk.cli.commands.CSVImportCommand.run(CSVImportCommand.java:186) at org.kitesdk.cli.Main.run(Main.java:178) at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:70) at org.kitesdk.cli.Main.main(Main.java:256) 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:497) at org.apache.hadoop.util.RunJar.run(RunJar.java:221) at org.apache.hadoop.util.RunJar.main(RunJar.java:136) [root@bda1node03 forecast]# vi test6.csv
    via by chandra s koripella,
  • Hive is not starting and show errors
    via Stack Overflow by codin
    ,
  • kite-sdk s3a jars are missing from classpath
    via Stack Overflow by Ofir.R
    ,
  • NoClassFounndException with Hipi bundle
    via by Muhammad Usman Yaseen,
  • Hadoop: ClassNotFoundException
    via Stack Overflow by user6556673
    ,
    • java.lang.ClassNotFoundException: URLCat at java.net.URLClassLoader.findClass(URLClassLoader.java:381) at java.lang.ClassLoader.loadClass(ClassLoader.java:424) at java.lang.ClassLoader.loadClass(ClassLoader.java:357) at java.lang.Class.forName0(Native Method) at java.lang.Class.forName(Class.java:348) at org.apache.hadoop.util.RunJar.run(RunJar.java:214) at org.apache.hadoop.util.RunJar.main(RunJar.java:136)

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