Hi, I am using CDH 5.1.3 i.e. hadoop version 2.3.0
I am running Hbase row counter map reduce job. All the mappers in the Job complete successfully. there are no reducers in the job. However, in the cleanup/stop phase I see the following exception in the application logs stored in hdfs. Because of this error, there is no Job information available in the HistoryServer. Any pointers would be greatly appreciated. 2015-01-05 14:15:29,397 INFO [Thread-270] org.apache.hadoop.service.AbstractService: Service JobHistoryEventHandler failed in state STOPPED; cause: org.apache.avro.AvroTypeException: Attempt to process a enum when a item-end was expected. org.apache.avro.AvroTypeException: Attempt to process a enum when a item-end was expected. at org.apache.avro.io.parsing.Parser.advance(Parser.java:93) at org.apache.avro.io.JsonEncoder.writeEnum(JsonEncoder.java:215) at org.apache.avro.specific.SpecificDatumWriter.writeEnum(SpecificDatumWriter.java:54) at org.apache.avro.generic.GenericDatumWriter.write(GenericDatumWriter.java:67) at org.apache.avro.generic.GenericDatumWriter.writeField(GenericDatumWriter.java:114) at org.apache.avro.generic.GenericDatumWriter.writeRecord(GenericDatumWriter.java:104) at org.apache.avro.generic.GenericDatumWriter.write(GenericDatumWriter.java:66) at org.apache.avro.generic.GenericDatumWriter.write(GenericDatumWriter.java:58) at org.apache.hadoop.mapreduce.jobhistory.EventWriter.write(EventWriter.java:66) at org.apache.hadoop.mapreduce.jobhistory.JobHistoryEventHandler$MetaInfo.writeEvent(JobHistoryEventHandler.java:906) at org.apache.hadoop.mapreduce.jobhistory.JobHistoryEventHandler.handleEvent(JobHistoryEventHandler.java:514) at org.apache.hadoop.mapreduce.jobhistory.JobHistoryEventHandler.serviceStop(JobHistoryEventHandler.java:335) at org.apache.hadoop.service.AbstractService.stop(AbstractService.java:221) at org.apache.hadoop.service.ServiceOperations.stop(ServiceOperations.java:52) at org.apache.hadoop.service.ServiceOperations.stopQuietly(ServiceOperations.java:80) at org.apache.hadoop.service.CompositeService.stop(CompositeService.java:158) at org.apache.hadoop.service.CompositeService.serviceStop(CompositeService.java:132) at org.apache.hadoop.mapreduce.v2.app.MRAppMaster.serviceStop(MRAppMaster.java:1471) at org.apache.hadoop.service.AbstractService.stop(AbstractService.java:221) at org.apache.hadoop.mapreduce.v2.app.MRAppMaster.stop(MRAppMaster.java:1085) - Sunil