Hadoop 0.21.0's combiner could be cmd and it just solves my problem.Thank all of you.Thanks^_^
2011-01-21 xieyeshan 发件人： Koji Noguchi 发送时间： 2011-01-19 03:48:31 收件人： [email protected] 抄送： 主题： Re: How to use combiner in hadoop streaming (Bcc general@. This is for Hadoop project level announcements and discussions. http://hadoop.apache.org/mailing_lists.html . Using mapreduce-user@) Yeshan, Which version of hadoop are you using? Officially, combiner for non-java command was added in 0.21 https://issues.apache.org/jira/browse/HADOOP-4842 but I¹d bet some of those 0.20s have this backported. Koji On 1/18/11 12:06 AM, "Harsh J" <[email protected]> wrote: > Right now, the Combiner has to be a Java Class. A command is > unacceptable, as noted here: > http://wiki.apache.org/hadoop/HadoopStreaming > > On Tue, Jan 18, 2011 at 1:30 PM, xieyeshan <[email protected]> > wrote: >> hi,all >> >> I want to use combiner in hadoop streaming, but combiner is not the same >> as mapper or reducer in streaming.How could I do this? >> Thanks! >> >> >> Yours, >> >> Yeshan Xie >> >> 2011-01-18 >> >> >> >> xieyeshan >> > > > > -- > Harsh J > www.harshj.com >
