Hi, I am getting the following exception when trying to run the DBCountPageView example obtained from http://search-hadoop.com/c/Map/Reduce:/src/examples/org/apache/hadoop/examples/DBCountPageView.java. I am using a PostgreSQL database. Any help would be greatly appreciated!
java.io.IOException: Type mismatch in key from map: expected org.apache.hadoop.io.Text, recieved org.apache.hadoop.io.LongWritable at org.apache.hadoop.mapred.MapTask$MapOutputBuffer.collect(MapTask.java:871) at org.apache.hadoop.mapred.MapTask$NewOutputCollector.write(MapTask.java:574) at org.apache.hadoop.mapreduce.TaskInputOutputContext.write(TaskInputOutputContext.java:80) at org.apache.hadoop.mapreduce.Mapper.map(Mapper.java:124) at org.apache.hadoop.mapreduce.Mapper.run(Mapper.java:144) at org.apache.hadoop.mapred.MapTask.runNewMapper(MapTask.java:647) at org.apache.hadoop.mapred.MapTask.run(MapTask.java:323) at org.apache.hadoop.mapred.LocalJobRunner$Job.run(LocalJobRunner.java:210) 11/10/06 08:48:37 INFO mapred.JobClient: map 0% reduce 0% 11/10/06 08:48:37 INFO mapred.JobClient: Job complete: job_local_0001 11/10/06 08:48:37 INFO mapred.JobClient: Counters: 0 11/10/06 08:48:37 INFO examples.DBCountPageView: totalPageview=60 11/10/06 08:48:37 INFO examples.DBCountPageView: sumPageview=0 java.lang.RuntimeException: Evaluation was not correct! at org.apache.hadoop.examples.DBCountPageView.run(DBCountPageView.java:439) at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:65) at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:79) at org.apache.hadoop.examples.DBCountPageView.main(DBCountPageView.java:452)