Number of map tasks spawned

Hi, The MapReduce tutorial specifies that >> The Hadoop Map/Reduce framework spawns one map task for each InputSplit generated by the InputFormat for the job. But, the mapred.map.tasks definition is >> The default number of map tasks per job. Ignored when mapred.job.tracker is "local". S

Re: counting pairs of items across item types

Hi Sebastian. With HIHO, you can supply a sql query which joins tables in the database and get the results to Hadoop. Say, you want to get the following data from your table to Hadoop: select table.1col1, table2.col2 from table1, table2 where table1.id = table2.addressId If you check DBInputForm