Hi Subroto, I mean that if I get some strings in mapper and I want to use them in reducer. But they are neither keys nor values. By the way, Can reducer get side files in cache? --
Regards! Jun Tan At 2011-08-09 14:42:10,"Subroto Sanyal" <subrotosan...@huawei.com> wrote: Hi Jun, What is the file, list, string [] in this context? I mean to say which file or list or string[]. The new MR (org.apache.hadoop.mapreduce.*) APIs has a parameter “context”. Request you to browse through the APIs of Context (Inherited from JobContext->TaskAttemptContext). The context parameter may provide you the reference you need. Regards, Subroto Sanyal From:谭军 [mailto:tanjun_2...@163.com] Sent: Tuesday, August 09, 2011 11:58 AM To: mapreduce Subject: Can reducer get parameters from mapper besides key and value? Hi, Can reducer gets parameters from mapper besides key and value? Such as files, lists, string[] etc. Thanks -- Regards! Jun Tan
