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Flume >> mail # dev >> Exception in thread "main" java.lang.NoClassDefFoundError: com/google/common/collect/Maps


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kashif khan 2012-11-20, 14:22
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Re: Exception in thread "main" java.lang.NoClassDefFoundError: com/google/common/collect/Maps
This should go to one of the Hadoop User lists, not on the Flume dev list.
Regards,
Hari
--
Hari Shreedharan
On Tuesday, November 20, 2012 at 6:22 AM, kashif khan wrote:

> Dear all,
>
> I am running simple java program to create a directory in HDFS. The code as:
>
>
> import org.apache.hadoop.conf.Configuration;
> import org.apache.hadoop.fs.FileSystem;
> import org.apache.hadoop.fs.Path;
> import java.io.IOException;
>
> public class CopyFile {
>
> public static void main(String[] args) throws IOException{
> Configuration conf = new Configuration();
> //conf.set("fs.default.name (http://fs.default.name)", "hadoop1.brunel.ac.uk:8020");
> conf.addResource(new Path("/etc/hadoop/conf/core-site.xml"));
> conf.addResource(new Path ("/etc/hadoop/conf/hdfs-site.xml"));
> FileSystem dfs = FileSystem.get(conf);
> String dirName = "Test1";
> Path src = new Path(dfs.getWorkingDirectory() + "/" + dirName);
> dfs.mkdirs(src);
> //Path scr1 = new Path("/usr/Eclipse/Output.csv");
> //Path dst = new Path(dfs.getWorkingDirectory() + "/Test1/");
> //dfs.copyFromLocalFile(scr1, dst);
> System.out.println("Directory created:" + src);
> }
> }
>
>
> Generating the following error message. Anyone have any idea about this
> error. Please let me know.
>
>
> Exception in thread "main" java.lang.NoClassDefFoundError:
> com/google/common/collect/Maps
> at
> org.apache.hadoop.metrics2.lib.MetricsRegistry.<init>(MetricsRegistry.java:42)
> at
> org.apache.hadoop.metrics2.impl.MetricsSystemImpl.<init>(MetricsSystemImpl.java:87)
> at
> org.apache.hadoop.metrics2.impl.MetricsSystemImpl.<init>(MetricsSystemImpl.java:133)
> at
> org.apache.hadoop.metrics2.lib.DefaultMetricsSystem.<init>(DefaultMetricsSystem.java:38)
> at
> org.apache.hadoop.metrics2.lib.DefaultMetricsSystem.<clinit>(DefaultMetricsSystem.java:36)
> at
> org.apache.hadoop.security.UserGroupInformation$UgiMetrics.create(UserGroupInformation.java:97)
> at
> org.apache.hadoop.security.UserGroupInformation.<clinit>(UserGroupInformation.java:190)
> at
> org.apache.hadoop.fs.FileSystem$Cache$Key.<init>(FileSystem.java:2373)
> at
> org.apache.hadoop.fs.FileSystem$Cache$Key.<init>(FileSystem.java:2365)
> at org.apache.hadoop.fs.FileSystem$Cache.get(FileSystem.java:2233)
> at org.apache.hadoop.fs.FileSystem.get(FileSystem.java:300)
> at org.apache.hadoop.fs.FileSystem.get(FileSystem.java:156)
> at CopyFile.main(CopyFile.java:14)
> Caused by: java.lang.ClassNotFoundException: com.google.common.collect.Maps
> at java.net.URLClassLoader$1.run(URLClassLoader.java:217)
> at java.security.AccessController.doPrivileged(Native Method)
> at java.net.URLClassLoader.findClass(URLClassLoader.java:205)
> at java.lang.ClassLoader.loadClass(ClassLoader.java:321)
> at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:294)
> at java.lang.ClassLoader.loadClass(ClassLoader.java:266)
> ... 13 more
>
> Please let me know, if anyone have any idea about the error.
>
> Many thanks
>
> Best regards,
>
> KK

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Mike Percy 2012-11-20, 19:11
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kashif khan 2012-11-21, 13:08