Hi
I have tow nodes:
n1 (master, salve) and n2 (slave)
after set up I ran wordcount example and it worked fine:
[hduser@n1 ~]$ hadoop jar /usr/local/hadoop/hadoop-examples-1.0.4.jar
wordcount /user/hduser/gutenberg /user/hduser/gutenberg-output
13/07/11 15:30:44 INFO input.FileInputFormat: Total input paths to
process : 7
13/07/11 15:30:44 INFO util.NativeCodeLoader: Loaded the native-hadoop
library
13/07/11 15:30:44 WARN snappy.LoadSnappy: Snappy native library not loaded
13/07/11 15:30:44 INFO mapred.JobClient: Running job: job_201307111355_0015
13/07/11 15:30:45 INFO mapred.JobClient: map 0% reduce 0%
13/07/11 15:31:03 INFO mapred.JobClient: map 42% reduce 0%
13/07/11 15:31:06 INFO mapred.JobClient: map 57% reduce 0%
13/07/11 15:31:09 INFO mapred.JobClient: map 71% reduce 0%
13/07/11 15:31:15 INFO mapred.JobClient: map 100% reduce 0%
13/07/11 15:31:18 INFO mapred.JobClient: map 100% reduce 23%
13/07/11 15:31:27 INFO mapred.JobClient: map 100% reduce 100%
13/07/11 15:31:32 INFO mapred.JobClient: Job complete: job_201307111355_0015
13/07/11 15:31:32 INFO mapred.JobClient: Counters: 30
13/07/11 15:31:32 INFO mapred.JobClient: Job Counters
13/07/11 15:31:32 INFO mapred.JobClient: Launched reduce tasks=1
13/07/11 15:31:32 INFO mapred.JobClient: SLOTS_MILLIS_MAPS=67576
13/07/11 15:31:32 INFO mapred.JobClient: Total time spent by all
reduces waiting after reserving slots (ms)=0
13/07/11 15:31:32 INFO mapred.JobClient: Total time spent by all
maps waiting after reserving slots (ms)=0
13/07/11 15:31:32 INFO mapred.JobClient: Rack-local map tasks=3
13/07/11 15:31:32 INFO mapred.JobClient: Launched map tasks=7
13/07/11 15:31:32 INFO mapred.JobClient: Data-local map tasks=4
13/07/11 15:31:32 INFO mapred.JobClient: SLOTS_MILLIS_REDUCES=21992
13/07/11 15:31:32 INFO mapred.JobClient: File Output Format Counters
13/07/11 15:31:32 INFO mapred.JobClient: Bytes Written=1412505
13/07/11 15:31:32 INFO mapred.JobClient: FileSystemCounters
13/07/11 15:31:32 INFO mapred.JobClient: FILE_BYTES_READ=5414195
13/07/11 15:31:32 INFO mapred.JobClient: HDFS_BYTES_READ=6950820
13/07/11 15:31:32 INFO mapred.JobClient: FILE_BYTES_WRITTEN=8744993
13/07/11 15:31:32 INFO mapred.JobClient: HDFS_BYTES_WRITTEN=1412505
13/07/11 15:31:32 INFO mapred.JobClient: File Input Format Counters
13/07/11 15:31:32 INFO mapred.JobClient: Bytes Read=6950001
13/07/11 15:31:32 INFO mapred.JobClient: Map-Reduce Framework
13/07/11 15:31:32 INFO mapred.JobClient: Map output materialized
bytes=3157469
13/07/11 15:31:32 INFO mapred.JobClient: Map input records=137146
13/07/11 15:31:32 INFO mapred.JobClient: Reduce shuffle bytes=2904836
13/07/11 15:31:32 INFO mapred.JobClient: Spilled Records=594764
13/07/11 15:31:32 INFO mapred.JobClient: Map output bytes=11435849
13/07/11 15:31:32 INFO mapred.JobClient: Total committed heap usage
(bytes)=1128136704
13/07/11 15:31:32 INFO mapred.JobClient: CPU time spent (ms)=18230
13/07/11 15:31:32 INFO mapred.JobClient: Combine input records=1174991
13/07/11 15:31:32 INFO mapred.JobClient: SPLIT_RAW_BYTES=819
13/07/11 15:31:32 INFO mapred.JobClient: Reduce input records=218990
13/07/11 15:31:32 INFO mapred.JobClient: Reduce input groups=128513
13/07/11 15:31:32 INFO mapred.JobClient: Combine output records=218990
13/07/11 15:31:32 INFO mapred.JobClient: Physical memory (bytes)
snapshot=1179656192
13/07/11 15:31:32 INFO mapred.JobClient: Reduce output records=128513
13/07/11 15:31:32 INFO mapred.JobClient: Virtual memory (bytes)
snapshot=22992117760
13/07/11 15:31:32 INFO mapred.JobClient: Map output records=1174991
from web interface (http://n1:50030/) I saw that both (n1 and n2 ) were
used without any errors.
Problems appear if I try to use following commands in master (n1):
[hduser@n1 ~]$hadoop jar
mahout-distribution-0.7/mahout-examples-0.7-job.jar
org.apache.mahout.classifier.df.mapreduce.BuildForest
-Dmapred.max.split.size=1874231 -p -d testdata/bal_ee_2009.csv -ds
testdata/bal_ee_2009.csv.info -sl 10 -o bal_ee_2009_out -t 1
SLF4J: Class path contains multiple SLF4J bindings.
SLF4J: Found binding in
[file:/usr/local/hadoop-1.0.4/org/slf4j/impl/StaticLoggerBinder.class]
SLF4J: Found binding in
[jar:file:/usr/local/hadoop-1.0.4/lib/slf4j-log4j12-1.4.3.jar!/org/slf4j/impl/StaticLoggerBinder.class]
SLF4J: See http://www.slf4j.org/codes.html#multiple_bindings for an
explanation.
13/07/11 15:36:50 INFO mapreduce.BuildForest: Partial Mapred implementation
13/07/11 15:36:50 INFO mapreduce.BuildForest: Building the forest...
13/07/11 15:36:50 WARN mapred.JobClient: No job jar file set. User
classes may not be found. See JobConf(Class) or JobConf#setJar(String).
13/07/11 15:36:50 INFO input.FileInputFormat: Total input paths to
process : 1
13/07/11 15:36:50 INFO util.NativeCodeLoader: Loaded the native-hadoop
library
13/07/11 15:36:50 WARN snappy.LoadSnappy: Snappy native library not loaded
13/07/11 15:36:50 INFO mapred.JobClient: Running job: job_201307111355_0016
13/07/11 15:36:51 INFO mapred.JobClient: map 0% reduce 0%
13/07/11 15:37:09 INFO mapred.JobClient: map 7% reduce 0%
13/07/11 15:37:11 INFO mapred.JobClient: Task Id :
attempt_201307111355_0016_m_000002_0, Status : FAILED
java.lang.RuntimeException: java.lang.ClassNotFoundException:
org.apache.mahout.classifier.df.mapreduce.partial.Step1Mapper
at
org.apache.hadoop.conf.Configuration.getClass(Configuration.java:867)
at
org.apache.hadoop.mapreduce.JobContext.getMapperClass(JobContext.java:199)
at org.apache.hadoop.mapred.MapTask.runNewMapper(MapTask.java:719)
at org.apache.hadoop.mapred.MapTask.run(MapTask.java:370)
at org.apache.hadoop.mapred.Child$4.run(Child.java:255)
at java.security.AccessController.doPrivileged(Native Method)
at javax.security.auth.Subject.doAs(Subject.java:415)
at
org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1121)
at org.apache.hadoop.mapred.Child.main(Child.java:249)
Caused by: java.lang.ClassNotFoundException:
org.apache.mahout.classifier.df.mapreduce.partial.Step1Mapper
at java.net.URLClassLoader$1.run(URLClassLoader.java:366)
at java.net.URLClassLoader$1.run(URLClassLoader.java:355)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:354)
at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:270)
at
org.apache.hadoop.conf.Configuration.getClassByName(Configuration.java:820)
at
org.apache.hadoop.conf.Configuration.getClass(Configuration.java:865)
... 8 more
...
...
...
13/07/11 15:37:37 INFO mapred.JobClient: map 61% reduce 0%
13/07/11 15:37:46 INFO mapred.JobClient: map 76% reduce 0%
13/07/11 15:37:55 INFO mapred.JobClient: map 92% reduce 0%
13/07/11 15:38:01 INFO mapred.JobClient: map 100% reduce 0%
13/07/11 15:38:06 INFO mapred.JobClient: Job complete: job_201307111355_0016
13/07/11 15:38:06 INFO mapred.JobClient: Counters: 20
13/07/11 15:38:06 INFO mapred.JobClient: Job Counters
13/07/11 15:38:06 INFO mapred.JobClient: SLOTS_MILLIS_MAPS=184724
13/07/11 15:38:06 INFO mapred.JobClient: Total time spent by all
reduces waiting after reserving slots (ms)=0
13/07/11 15:38:06 INFO mapred.JobClient: Total time spent by all
maps waiting after reserving slots (ms)=0
13/07/11 15:38:06 INFO mapred.JobClient: Rack-local map tasks=13
13/07/11 15:38:06 INFO mapred.JobClient: Launched map tasks=22
13/07/11 15:38:06 INFO mapred.JobClient: Data-local map tasks=9
13/07/11 15:38:06 INFO mapred.JobClient: SLOTS_MILLIS_REDUCES=0
13/07/11 15:38:06 INFO mapred.JobClient: File Output Format Counters
13/07/11 15:38:06 INFO mapred.JobClient: Bytes Written=184520
13/07/11 15:38:06 INFO mapred.JobClient: FileSystemCounters
13/07/11 15:38:06 INFO mapred.JobClient: HDFS_BYTES_READ=23444612
13/07/11 15:38:06 INFO mapred.JobClient: FILE_BYTES_WRITTEN=294037
13/07/11 15:38:06 INFO mapred.JobClient: HDFS_BYTES_WRITTEN=184520
13/07/11 15:38:06 INFO mapred.JobClient: File Input Format Counters
13/07/11 15:38:06 INFO mapred.JobClient: Bytes Read=22952913
13/07/11 15:38:06 INFO mapred.JobClient: Map-Reduce Framework
13/07/11 15:38:06 INFO mapred.JobClient: Map input records=204091
13/07/11 15:38:06 INFO mapred.JobClient: Physical memory (bytes)
snapshot=1402363904
13/07/11 15:38:06 INFO mapred.JobClient: Spilled Records=0
13/07/11 15:38:06 INFO mapred.JobClient: CPU time spent (ms)=26640
13/07/11 15:38:06 INFO mapred.JobClient: Total committed heap usage
(bytes)=1333985280
13/07/11 15:38:06 INFO mapred.JobClient: Virtual memory (bytes)
snapshot=37349126144
13/07/11 15:38:06 INFO mapred.JobClient: Map output records=1
13/07/11 15:38:06 INFO mapred.JobClient: SPLIT_RAW_BYTES=1573
13/07/11 15:38:07 INFO common.HadoopUtil: Deleting
hdfs://master:54310/user/hduser/bal_ee_2009_out
13/07/11 15:38:07 INFO mapreduce.BuildForest: Build Time: 0h 1m 16s 977
13/07/11 15:38:07 INFO mapreduce.BuildForest: Forest num Nodes: 10700
13/07/11 15:38:07 INFO mapreduce.BuildForest: Forest mean num Nodes: 10700
13/07/11 15:38:07 INFO mapreduce.BuildForest: Forest mean max Depth: 17
13/07/11 15:38:07 INFO mapreduce.BuildForest: Storing the forest in:
bal_ee_2009_out/forest.seq
From web console I can see that n1 tasks are fine but n2 tasks failed:
java.lang.RuntimeException: java.lang.ClassNotFoundException:
org.apache.mahout.classifier.df.mapreduce.partial.Step1Mapper
at org.apache.hadoop.conf.Configuration.getClass(Configuration.java:867)
at
org.apache.hadoop.mapreduce.JobContext.getMapperClass(JobContext.java:199)
at org.apache.hadoop.mapred.MapTask.runNewMapper(MapTask.java:719)
at org.apache.hadoop.mapred.MapTask.run(MapTask.java:370)
at org.apache.hadoop.mapred.Child$4.run(Child.java:255)
at java.security.AccessController.doPrivileged(Native Method)
at javax.security.auth.Subject.doAs(Subject.java:415)
at
org.apache.hadoop.security.UserGroupInformation.doAs(UserGroupInformation.java:1121)
at org.apache.hadoop.mapred.Child.main(Child.java:249)
Caused by: java.lang.ClassNotFoundException:
org.apache.mahout.classifier.df.mapreduce.partial.Step1Mapper
at java.net.URLClassLoader$1.run(URLClassLoader.java:366)
at java.net.URLClassLoader$1.run(URLClassLoader.java:355)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:354)
at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:270)
at
org.apache.hadoop.conf.Configuration.getClassByName(Configuration.java:820)
at org.apache.hadoop.conf.Configuration.getClass(Configuration.java:865)
... 8 more
But If I run same command from n2
[hduser@n2 ~]$ hadoop jar
mahout-distribution-0.7/mahout-examples-0.7-job.jar
org.apache.mahout.classifier.df.mapreduce.BuildForest
-Dmapred.max.split.size=1874231 -p -d testdata/bal_ee_2009.csv -ds
testdata/bal_ee_2009.csv.info -sl 10 -o bal_ee_2009_out -t 1
13/07/11 15:41:20 INFO mapreduce.BuildForest: Partial Mapred implementation
13/07/11 15:41:20 INFO mapreduce.BuildForest: Building the forest...
13/07/11 15:41:21 INFO input.FileInputFormat: Total input paths to
process : 1
13/07/11 15:41:21 INFO util.NativeCodeLoader: Loaded the native-hadoop
library
13/07/11 15:41:21 WARN snappy.LoadSnappy: Snappy native library not loaded
13/07/11 15:41:21 INFO mapred.JobClient: Running job: job_201307111355_0017
13/07/11 15:41:22 INFO mapred.JobClient: map 0% reduce 0%
13/07/11 15:41:43 INFO mapred.JobClient: map 7% reduce 0%
13/07/11 15:41:46 INFO mapred.JobClient: map 15% reduce 0%
13/07/11 15:41:49 INFO mapred.JobClient: map 38% reduce 0%
13/07/11 15:41:52 INFO mapred.JobClient: map 46% reduce 0%
13/07/11 15:42:01 INFO mapred.JobClient: map 61% reduce 0%
13/07/11 15:42:02 INFO mapred.JobClient: map 76% reduce 0%
13/07/11 15:42:09 INFO mapred.JobClient: map 84% reduce 0%
13/07/11 15:42:13 INFO mapred.JobClient: map 100% reduce 0%
13/07/11 15:42:19 INFO mapred.JobClient: Job complete: job_201307111355_0017
13/07/11 15:42:19 INFO mapred.JobClient: Counters: 20
13/07/11 15:42:19 INFO mapred.JobClient: Job Counters
13/07/11 15:42:19 INFO mapred.JobClient: SLOTS_MILLIS_MAPS=138911
13/07/11 15:42:19 INFO mapred.JobClient: Total time spent by all
reduces waiting after reserving slots (ms)=0
13/07/11 15:42:19 INFO mapred.JobClient: Total time spent by all
maps waiting after reserving slots (ms)=0
13/07/11 15:42:19 INFO mapred.JobClient: Rack-local map tasks=6
13/07/11 15:42:19 INFO mapred.JobClient: Launched map tasks=13
13/07/11 15:42:19 INFO mapred.JobClient: Data-local map tasks=7
13/07/11 15:42:19 INFO mapred.JobClient: SLOTS_MILLIS_REDUCES=0
13/07/11 15:42:19 INFO mapred.JobClient: File Output Format Counters
13/07/11 15:42:19 INFO mapred.JobClient: Bytes Written=184956
13/07/11 15:42:19 INFO mapred.JobClient: FileSystemCounters
13/07/11 15:42:19 INFO mapred.JobClient: HDFS_BYTES_READ=23444612
13/07/11 15:42:19 INFO mapred.JobClient: FILE_BYTES_WRITTEN=296026
13/07/11 15:42:19 INFO mapred.JobClient: HDFS_BYTES_WRITTEN=184956
13/07/11 15:42:19 INFO mapred.JobClient: File Input Format Counters
13/07/11 15:42:19 INFO mapred.JobClient: Bytes Read=22952913
13/07/11 15:42:19 INFO mapred.JobClient: Map-Reduce Framework
13/07/11 15:42:19 INFO mapred.JobClient: Map input records=204091
13/07/11 15:42:19 INFO mapred.JobClient: Physical memory (bytes)
snapshot=1370255360
13/07/11 15:42:19 INFO mapred.JobClient: Spilled Records=0
13/07/11 15:42:19 INFO mapred.JobClient: CPU time spent (ms)=27990
13/07/11 15:42:19 INFO mapred.JobClient: Total committed heap usage
(bytes)=1292500992
13/07/11 15:42:19 INFO mapred.JobClient: Virtual memory (bytes)
snapshot=37360082944
13/07/11 15:42:19 INFO mapred.JobClient: Map output records=1
13/07/11 15:42:19 INFO mapred.JobClient: SPLIT_RAW_BYTES=1573
13/07/11 15:42:20 INFO common.HadoopUtil: Deleting
hdfs://master:54310/user/hduser/bal_ee_2009_out
13/07/11 15:42:20 INFO mapreduce.BuildForest: Build Time: 0h 0m 59s 386
13/07/11 15:42:20 INFO mapreduce.BuildForest: Forest num Nodes: 10698
13/07/11 15:42:20 INFO mapreduce.BuildForest: Forest mean num Nodes: 10698
13/07/11 15:42:20 INFO mapreduce.BuildForest: Forest mean max Depth: 16
13/07/11 15:42:20 INFO mapreduce.BuildForest: Storing the forest in:
bal_ee_2009_out/forest.seq
Both (n1 and n2) are used and from web console I can see that there are
no errors.
Is there any explanations why I am getting errors when I run command
from master?
--
Regards, Margus (Margusja) Roo
+372 51 48 780
http://margus.roo.ee
skype: margusja
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