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Java heap space error

Question asked by msarkar Employee on Mar 4, 2013
Latest reply on Mar 6, 2013 by msarkar
Submitting a job led to Java heap space error. Any suggestions?

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hadoop jar /opt/mapr/hadoop/hadoop-0.20.2/hadoop-0.20.2-dev-examples.jar wordcount /user/root/wcin /user/root/wcout1 13/03/04 02:41:59 INFO fs.JobTrackerWatcher: Current running JobTracker is: redhat5.maprtech.com/10.10.80.105:9001 13/03/04 02:41:59 INFO input.FileInputFormat: Total input paths to process : 3 13/03/04 02:41:59 WARN snappy.LoadSnappy: Snappy native library not loaded 13/03/04 02:41:59 INFO mapred.JobClient: Creating job's output directory at /user/root/wcout1 13/03/04 02:41:59 INFO mapred.JobClient: Creating job's user history location directory at /user/root/wcout1/_logs 13/03/04 02:41:59 INFO mapred.JobClient: Running job: job_201302270853_0012 13/03/04 02:42:00 INFO mapred.JobClient: map 0% reduce 0% 13/03/04 02:42:09 INFO mapred.JobClient: Task Id : attempt_201302270853_0012_m_000001_0, Status : FAILED on node redhat3.maprtech.com Error: Java heap space attempt_201302270853_0012_m_000001_0: log4j:WARN No appenders could be found for logger (org.apache.hadoop.util.NativeCodeLoader). attempt_201302270853_0012_m_000001_0: log4j:WARN Please initialize the log4j system properly. 13/03/04 02:42:09 INFO mapred.JobClient: Task Id : attempt_201302270853_0012_m_000002_0, Status : FAILED on node redhat5.maprtech.com Error: Java heap space attempt_201302270853_0012_m_000002_0: log4j:WARN No appenders could be found for logger (org.apache.hadoop.util.NativeCodeLoader). attempt_201302270853_0012_m_000002_0: log4j:WARN Please initialize the log4j system properly. 13/03/04 02:42:09 INFO mapred.JobClient: Task Id : attempt_201302270853_0012_m_000000_0, Status : FAILED on node redhat2.maprtech.com Error: Java heap space

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