when I use mahout 0.4 to execute on a hadoop cluster: * ./mahout org.apache.mahout.clustering.syntheticcontrol.canopy.Job --input /mahout/input --output /mahout/output13 -t1 80.0 -t2 50.0*
it works very well...... but when I use mahout 0.5 to execute *the same command(if omitting the output directory...):* *./mahout org.apache.mahout.clustering.syntheticcontrol.canopy.Job --input /mahout/input --output /mahout/output14 -t1 80.0 -t2 50.0* it reports CLASSNOTFOUND exception, what cause this happen, how to solve it ... I am really confused....: [root@x06 bin]# ./mahout org.apache.mahout.clustering.syntheticcontrol.canopy.Job --input /mahout/input --output /mahout/output15 -t1 80.0 -t2 50.0 Running on hadoop, using HADOOP_HOME=/usr/lib/hadoop No HADOOP_CONF_DIR set, using /usr/lib/hadoop/src/conf 11/08/05 19:36:43 WARN driver.MahoutDriver: No org.apache.mahout.clustering.syntheticcontrol.canopy.Job.props found on classpath, will use command-line arguments only 11/08/05 19:36:43 INFO canopy.Job: Running with only user-supplied arguments 11/08/05 19:36:43 INFO common.AbstractJob: Command line arguments: {--distanceMeasure=org.apache.mahout.common.distance.SquaredEuclideanDistanceMeasure, --endPhase=2147483647, --input=/mahout/input, --output=/mahout/output15, --startPhase=0, --t1=80.0, --t2=50.0, --tempDir=temp} 11/08/05 19:37:09 WARN mapred.JobClient: Use GenericOptionsParser for parsing the arguments. Applications should implement Tool for the same. 11/08/05 19:37:43 INFO input.FileInputFormat: Total input paths to process : 1 11/08/05 19:37:43 INFO lzo.GPLNativeCodeLoader: Loaded native gpl library 11/08/05 19:37:43 INFO lzo.LzoCodec: Successfully loaded & initialized native-lzo library [hadoop-lzo rev 2991c7d00d4b50494958eb1c8e7ef086d24853ea] 11/08/05 19:37:54 INFO mapred.JobClient: Running job: job_201108041755_7040 11/08/05 19:37:55 INFO mapred.JobClient: map 0% reduce 0% 11/08/05 19:38:19 INFO mapred.JobClient: map 100% reduce 0% 11/08/05 19:38:21 INFO mapred.JobClient: Job complete: job_201108041755_7040 11/08/05 19:38:21 INFO mapred.JobClient: Counters: 13 11/08/05 19:38:21 INFO mapred.JobClient: Job Counters 11/08/05 19:38:21 INFO mapred.JobClient: SLOTS_MILLIS_MAPS=4911 11/08/05 19:38:21 INFO mapred.JobClient: Total time spent by all reduces waiting after reserving slots (ms)=0 11/08/05 19:38:21 INFO mapred.JobClient: Total time spent by all maps waiting after reserving slots (ms)=0 11/08/05 19:38:21 INFO mapred.JobClient: Launched map tasks=1 11/08/05 19:38:21 INFO mapred.JobClient: Data-local map tasks=1 11/08/05 19:38:21 INFO mapred.JobClient: SLOTS_MILLIS_REDUCES=4017 11/08/05 19:38:21 INFO mapred.JobClient: FileSystemCounters 11/08/05 19:38:21 INFO mapred.JobClient: HDFS_BYTES_READ=288490 11/08/05 19:38:21 INFO mapred.JobClient: FILE_BYTES_WRITTEN=49166 11/08/05 19:38:21 INFO mapred.JobClient: HDFS_BYTES_WRITTEN=335470 11/08/05 19:38:21 INFO mapred.JobClient: Map-Reduce Framework 11/08/05 19:38:21 INFO mapred.JobClient: Map input records=600 11/08/05 19:38:21 INFO mapred.JobClient: Spilled Records=0 11/08/05 19:38:21 INFO mapred.JobClient: Map output records=600 11/08/05 19:38:21 INFO mapred.JobClient: SPLIT_RAW_BYTES=116 11/08/05 19:38:21 INFO canopy.CanopyDriver: Build Clusters Input: /mahout/output15/data Out: /mahout/output15 Measure: org.apache.mahout.common.distance.SquaredEuclideanDistanceMeasure@4dc1c92bt1: 80.0 t2: 50.0 11/08/05 19:38:21 WARN mapred.JobClient: Use GenericOptionsParser for parsing the arguments. Applications should implement Tool for the same. 11/08/05 19:38:26 INFO input.FileInputFormat: Total input paths to process : 1 11/08/05 19:38:31 INFO mapred.JobClient: Running job: job_201108041755_7056 11/08/05 19:38:32 INFO mapred.JobClient: map 0% reduce 0% 11/08/05 19:38:46 INFO mapred.JobClient: Task Id : attempt_201108041755_7056_m_000000_0, Status : FAILED Error: java.lang.ClassNotFoundException: org.apache.mahout.math.Vector at java.net.URLClassLoader$1.run(URLClassLoader.java:202) at java.security.AccessController.doPrivileged(Native Method) at java.net.URLClassLoader.findClass(URLClassLoader.java:190) at java.lang.ClassLoader.loadClass(ClassLoader.java:306) at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301) at java.lang.ClassLoader.loadClass(ClassLoader.java:247) at java.lang.Class.forName0(Native Method) at java.lang.Class.forName(Class.java:247) at org.apache.hadoop.conf.Configuration.getClassByName(Configuration.java:943) at org.apache.hadoop.conf.Configuration.getClass(Configuration.java:994) at org.apache.hadoop.conf.Configuration.getClass(Configuration.java:1020) at org.apache.hadoop.mapred.JobConf.getMapOutputValueClass(JobConf.java:747) at org.apache.hadoop.mapred.MapTask$MapOutputBuffer.<init>(MapTask.java:819) at org.apache.hadoop.mapred.MapTask$NewOutputCollector.<init>(MapTask.java:557) at org.apache.hadoop.mapred.MapTask.runNewMapper(MapTask.java:639) at org.apache.hadoop.mapred.MapTask.run(MapTask.java:323) at org.apache.hadoop.mapred.Child$4.run(Child.java:270) at java.security.AccessController.doPrivileged(Native Method) at javax.security.auth.Subject.doAs(Subject.java:396) at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1127) at org.apache.hadoop.mapred.Child.main(Child.java:264) 11/08/05 19:38:52 INFO mapred.JobClient: Task Id : attempt_201108041755_7056_m_000000_1, Status : FAILED Error: java.lang.ClassNotFoundException: org.apache.mahout.math.Vector at java.net.URLClassLoader$1.run(URLClassLoader.java:202) at java.security.AccessController.doPrivileged(Native Method) at java.net.URLClassLoader.findClass(URLClassLoader.java:190) at java.lang.ClassLoader.loadClass(ClassLoader.java:306) at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301) at java.lang.ClassLoader.loadClass(ClassLoader.java:247) at java.lang.Class.forName0(Native Method) at java.lang.Class.forName(Class.java:247) at org.apache.hadoop.conf.Configuration.getClassByName(Configuration.java:943) at org.apache.hadoop.conf.Configuration.getClass(Configuration.java:994) at org.apache.hadoop.conf.Configuration.getClass(Configuration.java:1020) at org.apache.hadoop.mapred.JobConf.getMapOutputValueClass(JobConf.java:747) at org.apache.hadoop.mapred.MapTask$MapOutputBuffer.<init>(MapTask.java:819) at org.apache.hadoop.mapred.MapTask$NewOutputCollector.<init>(MapTask.java:557) at org.apache.hadoop.mapred.MapTask.runNewMapper(MapTask.java:639) at org.apache.hadoop.mapred.MapTask.run(MapTask.java:323) at org.apache.hadoop.mapred.Child$4.run(Child.java:270) at java.security.AccessController.doPrivileged(Native Method) at javax.security.auth.Subject.doAs(Subject.java:396) at org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1127) at org.apache.hadoop.mapred.Child.main(Child.java:264) 11/08/05 19:39:00 INFO mapred.JobClient: Task Id : attempt_201108041755_7056_m_000000_2, Status : FAILED 11/08/05 19:39:12 INFO mapred.JobClient: Job complete: job_201108041755_7056 11/08/05 19:39:12 INFO mapred.JobClient: Counters: 8 11/08/05 19:39:12 INFO mapred.JobClient: Job Counters 11/08/05 19:39:12 INFO mapred.JobClient: SLOTS_MILLIS_MAPS=7530 11/08/05 19:39:12 INFO mapred.JobClient: Total time spent by all reduces waiting after reserving slots (ms)=0 11/08/05 19:39:12 INFO mapred.JobClient: Total time spent by all maps waiting after reserving slots (ms)=0 11/08/05 19:39:12 INFO mapred.JobClient: Rack-local map tasks=3 11/08/05 19:39:12 INFO mapred.JobClient: Launched map tasks=4 11/08/05 19:39:12 INFO mapred.JobClient: Data-local map tasks=1 11/08/05 19:39:12 INFO mapred.JobClient: Failed map tasks=1 11/08/05 19:39:12 INFO mapred.JobClient: SLOTS_MILLIS_REDUCES=2464 Exception in thread "main" java.lang.InterruptedException: Canopy Job failed processing /mahout/output15/data at org.apache.mahout.clustering.canopy.CanopyDriver.buildClustersMR(CanopyDriver.java:355) at org.apache.mahout.clustering.canopy.CanopyDriver.buildClusters(CanopyDriver.java:246) at org.apache.mahout.clustering.canopy.CanopyDriver.run(CanopyDriver.java:143) at org.apache.mahout.clustering.canopy.CanopyDriver.run(CanopyDriver.java:161) at org.apache.mahout.clustering.syntheticcontrol.canopy.Job.run(Job.java:92) at org.apache.mahout.clustering.syntheticcontrol.canopy.Job.run(Job.java:127) at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:65) at org.apache.mahout.clustering.syntheticcontrol.canopy.Job.main(Job.java:49) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at org.apache.hadoop.util.ProgramDriver$ProgramDescription.invoke(ProgramDriver.java:68) at org.apache.hadoop.util.ProgramDriver.driver(ProgramDriver.java:139) at org.apache.mahout.driver.MahoutDriver.main(MahoutDriver.java:187) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at org.apache.hadoop.util.RunJar.main(RunJar.java:186) [root@x06 bin]# -- Knowledge Mangement .