hadoop-mapreduce-user mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From Khaled BEN BAHRI <Khaled.Ben_ba...@it-sudparis.eu>
Subject INFO: Task Id : attempt_201007191410_0002_m_000000_0, Status : FAILED
Date Tue, 20 Jul 2010 13:01:11 GMT
hi

When i wrote a mapreduce program
i have this error
please can any one help me

Jul 19, 2010 5:06:31 PM org.apache.hadoop.mapred.JobClient monitorAndPrintJob
INFO: Task Id : attempt_201007191410_0002_m_000000_0, Status : FAILED
java.lang.NullPointerException
	at  
org.apache.hadoop.io.serializer.SerializationFactory.getSerializer(SerializationFactory.java:73)
	at org.apache.hadoop.mapred.MapTask$MapOutputBuffer.<init>(MapTask.java:797)
	at org.apache.hadoop.mapred.MapTask.runOldMapper(MapTask.java:350)
	at org.apache.hadoop.mapred.MapTask.run(MapTask.java:307)
	at org.apache.hadoop.mapred.Child.main(Child.java:170)


Thanks in advance for help

regards



Mime
View raw message