There are a few things that caused this to happen to me earlier on.
Make sure to check that it actually makes progress. Sometimes, slowness is
result of negative progress: it gets to say 10% complete on reduce, and then
drop back down to 5%...In that case the output can output that line with the
s
mortbay.util.ThreadPool$PoolThread.run(ThreadPool.java:534)
2008-12-12 12:06:31,107 INFO org.apache.hadoop.mapred.TaskTracker:
attempt_200812121139_0001_r_07_0 0.29801327% reduce > copy (135 of 151
at 1.42 MB/s) >
On Thu, Dec 11, 2008 at 12:13 PM, hc busy wrote:
> And aside from r
with
regards to these two problems?
On Wed, Dec 10, 2008 at 4:37 PM, hc busy wrote:
> Guys, I've just configured a hadoop cluster for the first time, and I'm
> running a null map-reduction over the streaming interface. (/bin/cat for
> both map and reducer). So I noticed tha
Guys, I've just configured a hadoop cluster for the first time, and I'm
running a null map-reduction over the streaming interface. (/bin/cat for
both map and reducer). So I noticed that the mapper and reducer complete
100% in the web ui within a reasonable amount of time, but the job does not
compl
