java - Mahout: Training of generated vector is throwing exception -


i having mahout 0.13.0 job running on hadoop 2.7.3(using aws). when trying train generated vector, throwing below exception:

container killed applicationmaster. container killed on request. exit code 143 container exited non-zero exit code 143  17/07/25 10:21:39 info job: task id : attempt_1500972617227_0091_m_000008_2, status : failed error: java.lang.illegalargumentexception: wrong numlabels: 0. must > 0!     @ com.google.common.base.preconditions.checkargument(preconditions.java:88)     @ org.apache.mahout.classifier.naivebayes.training.weightsmapper.setup(weightsmapper.java:44)     @ org.apache.hadoop.mapreduce.mapper.run(mapper.java:143)     @ org.apache.hadoop.mapred.maptask.runnewmapper(maptask.java:796)     @ org.apache.hadoop.mapred.maptask.run(maptask.java:342)     @ org.apache.hadoop.mapred.yarnchild$2.run(yarnchild.java:164)     @ java.security.accesscontroller.doprivileged(native method)     @ javax.security.auth.subject.doas(subject.java:422)     @ org.apache.hadoop.security.usergroupinformation.doas(usergroupinformation.java:1698)     @ org.apache.hadoop.mapred.yarnchild.main(yarnchild.java:158)

my input data learning in format below , not contain blank line:

event   308398661275111424  book hotel deals hotel mercure rainbow spend couple nights @ hotel mercure rainbow in  #deals  health  308215054011194849  $8 off $150 @ muscle & strength #coupons #deals  art 309512129285853184   marvel superhero assorted graphic novel 15-pack $38 + $4 s&h: graveyard mall offers ...  #offer360 #deals apparel 308215054011197980  febreze lavender vanilla , comfort fabric refresher, 27.0-ounce (pack of 9): febreze fabric ref...  #deal #deals tech    309513762744979456   dataman next : track data usage in real-time iphone on sale ($1.99 -> $0.99)  #iphone #deal home    308215054011203842  #discounts #deals offer 10: nespresso pixie espresso maker, red coffee espresso reviews  best buy price tech    308215054011206111  lenovo deals - $9 lenovo p830 headset hot #lenovo #deals #coupons  health  308381655717003265  therapy systems retinol cellular treatment cleanser / pm: containing pharmaceutical grade microen... #deal #deals tech    308215054011204704  tena serenity absorbency pads, slender 30 ea #amazon #deals camera  308328440174624768  #canon powershot a2200 14.1 mp #digital #camera 4x optical zoom    #photo #deals

command run job:

1. mahout seqdirectory -i /opt/function/input/functiondata.csv -o /opt/function/output/ 2. mahout seq2sparse -i /opt/function/output/ -o /opt/function/vector/ 3. mahout split -i /opt/function/vector/tfidf-vectors --trainingoutput /opt/function/train-vectors --testoutput /opt/function/test-vectors --randomselectionpct 40 --overwrite --sequencefiles -xm sequential 4. mahout trainnb -i /opt/function/vector/tfidf-vectors -o /opt/function/model -li /opt/function/labelindex -ow -c


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