Hello Daniel, I am trying to pass multiple non key values from mapper to reducer. I can pass key columns by concatenating the text key values. Can you please give a working sample code. Similarly for reading and writing a file inside the hdfs system other than normal read and write.
Thanks Remil Sent from my iPhone > On 17 Aug 2017, at 12:34 AM, Daniel Templeton <dan...@cloudera.com> wrote: > > Can you clarify what you mean for #1? For #2, try this: > > https://tutorials.techmytalk.com/2014/08/16/hadoop-hdfs-java-api/ > > Daniel > >> On 8/16/17 8:17 AM, Remil Mohanan wrote: >> >> >>> >>> >>>>> Hi there, >>>>> >>>>> Please help me to get a sample program for each scenario. >>>>> >>>>> 1) need a Java map reducer sample program where multiple parameters >>>>> are passed from mapper to reducer. >>>>> 2) need a Java map reducer program where there is a write to a file inside >>>>> hdfs filesystem as well as a read from a file inside hdfs other than >>>>> the normal input file and output file mentioned in the mapper and reducer. >>>>> >>>>> Have a nice day >>>>> >>>>> Thanks >>>>> >>>>> Remil >> --------------------------------------------------------------------- >> To unsubscribe, e-mail: mapreduce-dev-unsubscr...@hadoop.apache.org >> For additional commands, e-mail: mapreduce-dev-h...@hadoop.apache.org >> > --------------------------------------------------------------------- To unsubscribe, e-mail: mapreduce-dev-unsubscr...@hadoop.apache.org For additional commands, e-mail: mapreduce-dev-h...@hadoop.apache.org
