I tried to give exactly path. But I see the same error..
[hadoop@localhost ~]$ hadoop jar
/usr/lib/mahout/mahout-core-0.7-cdh4.2.1-job.jar
org.apache.mahout.cf.taste.hadoop.item.RecommenderJo
b -i /user/hadoop/recommend2_in -o /user/hadoop/rec_out -s
SIMILARITY_LOGLIKELIHOOD -b true
[Error]
====================================================
13/05/11 09:14:09 INFO mapreduce.Job: Task Id :
attempt_1368231064557_0001_m_000000_0, Status : FAILED
Error: java.lang.ArrayIndexOutOfBoundsException: 1
at
org.apache.mahout.cf.taste.hadoop.item.ItemIDIndexMapper.map(ItemIDIndexMapper.java:47)
at
org.apache.mahout.cf.taste.hadoop.item.ItemIDIndexMapper.map(ItemIDIndexMapper.java:31)
13/05/11 09:14:33 INFO mapreduce.Job: Counters: 6
Job Counters
Failed map tasks=4
Launched map tasks=4
Other local map tasks=3
Rack-local map tasks=1
Total time spent by all maps in occupied slots (ms)=26278
Total time spent by all reduces in occupied slots (ms)=0
Exception in thread "main" java.io.FileNotFoundException: File does not
exist: /user/hadoop/temp/preparePreferenceMatrix/numUsers.bin
at
org.apache.hadoop.hdfs.server.namenode.FSNamesystem.getBlockLocationsUpdateTimes(FSNamesystem.java:1312)
at
org.apache.hadoop.hdfs.server.namenode.FSNamesystem.getBlockLocationsInt(FSNamesystem.java:1258)
at
org.apache.hadoop.hdfs.server.namenode.FSNamesystem.getBlockLocations(FSNamesystem.java:1231)
====================================================
2013/5/10 Sebastian Schelter <s...@apache.org>
> I think there is some problem with the pathes to the files which you
> supply. You should try to give absolute pathes to the files.
>
> Best,
> Sebastian
>
>
> On 10.05.2013 13:36, 滝口倫理 wrote:
> > I would like to get recommended items by using RecommenderJob.
> > The input data I made is as below. There aren't preference value on
> purpose.
> >
> > When I run RecommenderJob, I got some errors.
> >
> > Does it mean I have to prepare the preference value for input file?
> > I want to do RecommenderJob without preference value.
> >
> > Regards
> > Takiguchi
> >
> >
> > [mahout command]
> > ===========================================================
> >
> > [hadoop@localhost test]$ cat rere2
> > 1 101
> > 1 102
> > 1 103
> > 2 101
> > 2 102
> > 2 103
> > 2 104
> > 3 101
> > 3 104
> > 3 105
> > 3 107
> > 4 101
> > 4 103
> > 4 104
> > 4 106
> > 5 101
> > 5 102
> > 5 103
> > 5 104
> > 5 105
> > 5 106
> >
> > [hadoop@localhost test]$ hadoop fs -mkdir recommend2_in
> >
> > [hadoop@localhost test]$ hadoop fs -put rere2 recommend2_in
> >
> > [hadoop@localhost test]$ hadoop jar
> > /usr/lib/mahout/mahout-core-0.7-cdh4.2.1-job.jar \
> > org.apache.mahout.cf.taste.hadoop.item.RecommenderJob \
> > -i recommend2_in -o rec_out -s SIMILARITY_LOGLIKELIHOOD \
> > -b true
> > ===========================================================
> >
> >
> > [Error]
> >
> =============================================================================
> >
> >
> > 13/05/10 20:15:54 INFO mapreduce.Job: Task Id :
> > attempt_1368183830239_0002_m_000000_0, Status : FAILED
> > Error: java.lang.ArrayIndexOutOfBoundsException: 1
> > at
> >
> org.apache.mahout.cf.taste.hadoop.item.ItemIDIndexMapper.map(ItemIDIndexMapper.java:47)
> > at
> >
> org.apache.mahout.cf.taste.hadoop.item.ItemIDIndexMapper.map(ItemIDIndexMapper.java:31)
> >
> > 13/05/10 20:16:02 INFO mapreduce.Job: Task Id :
> > attempt_1368183830239_0002_m_000000_1, Status : FAILED
> > Error: java.lang.ArrayIndexOutOfBoundsException: 1
> >
> > 13/05/10 20:16:10 INFO mapreduce.Job: Task Id :
> > attempt_1368183830239_0002_m_000000_2, Status : FAILED
> > Error: java.lang.ArrayIndexOutOfBoundsException: 1
> >
> > 13/05/10 20:16:18 INFO mapreduce.Job: Counters: 6
> > Job Counters
> > Failed map tasks=4
> > Launched map tasks=4
> > Other local map tasks=3
> > Rack-local map tasks=1
> > Total time spent by all maps in occupied slots (ms)=26266
> > Total time spent by all reduces in occupied slots (ms)=0
> > Exception in thread "main" java.io.FileNotFoundException: File does not
> > exist: /user/hadoop/temp/preparePreferenceMatrix/numUsers.bin
> > at
> >
> org.apache.hadoop.hdfs.server.namenode.FSNamesystem.getBlockLocationsUpdateTimes(FSNamesystem.java:1312)
> > at
> >
> org.apache.hadoop.hdfs.server.namenode.FSNamesystem.getBlockLocationsInt(FSNamesystem.java:1258)
> > at
> >
> org.apache.hadoop.hdfs.server.namenode.FSNamesystem.getBlockLocations(FSNamesystem.java:1231)
> >
> >
> >
> >
> =============================================================================
> >
>
>
