Accidentally, I clicked "Sent" by a mistake. Plase try: hadoop jar /usr/lib/hadoop-mapreduce/hadoop-mapreduce-examples.jar terasort *-Dmapreduce.job.reduces=34* /alex/terasort/1G-input /alex/terasort/1G-output
2013/12/11 Adam Kawa <kawa.a...@gmail.com> > Please try > > > > 2013/12/10 ch huang <justlo...@gmail.com> > >> hi,maillist: >> i try assign reduce number in commandline but seems not >> useful,i run tera sort like this >> >> # hadoop jar /usr/lib/hadoop-mapreduce/hadoop-mapreduce-examples.jar >> terasort /alex/terasort/1G-input /alex/terasort/1G-output >> -Dmapreduce.job.reduces=34 >> >> so default mapred-site.xml assign reducer number is 16,i try run it with >> 34 reducers,but the job run still as 16 reducers number,why? >> >> here is some output: >> >> Job Counters >> Launched map tasks=1 >> Launched reduce tasks=16 >> Rack-local map tasks=1 >> Total time spent by all maps in occupied slots (ms)=2318 >> Total time spent by all reduces in occupied slots >> (ms)=99714 >> > >
