Hi Jie, According to the Starfish README, the hadoop programs must be written using the new Hadoop API. This is not my case (I am using MultipleInputs among other non-new API supported features). Is there any way around this? Thanks,
-Leo On Wed, Mar 7, 2012 at 3:19 PM, Jie Li <ji...@cs.duke.edu> wrote: > Hi Leonardo, > > You might want to try Starfish which supports the memory profiling as well > as cpu/disk/network profiling for the performance tuning. > > Jie > ------------------ > Starfish is an intelligent performance tuning tool for Hadoop. > Homepage: www.cs.duke.edu/starfish/ > Mailing list: http://groups.google.com/group/hadoop-starfish > > > On Wed, Mar 7, 2012 at 2:36 PM, Leonardo Urbina <lurb...@mit.edu> wrote: > > > Hello everyone, > > > > I have a Hadoop job that I run on several GBs of data that I am trying to > > optimize in order to reduce the memory consumption as well as improve the > > speed. I am following the steps outlined in Tom White's "Hadoop: The > > Definitive Guide" for profiling using HPROF (p161), by setting the > > following properties in the JobConf: > > > > job.setProfileEnabled(true); > > > > job.setProfileParams("-agentlib:hprof=cpu=samples,heap=sites,depth=6," + > > "force=n,thread=y,verbose=n,file=%s"); > > job.setProfileTaskRange(true, "0-2"); > > job.setProfileTaskRange(false, "0-2"); > > > > I am trying to run this locally on a single pseudo-distributed install of > > hadoop (0.20.2) and it gives the following error: > > > > Exception in thread "main" java.io.FileNotFoundException: > > attempt_201203071311_0004_m_000000_0.profile (Permission denied) > > at java.io.FileOutputStream.open(Native Method) > > at java.io.FileOutputStream.<init>(FileOutputStream.java:194) > > at java.io.FileOutputStream.<init>(FileOutputStream.java:84) > > at > > org.apache.hadoop.mapred.JobClient.downloadProfile(JobClient.java:1226) > > at > > > org.apache.hadoop.mapred.JobClient.monitorAndPrintJob(JobClient.java:1302) > > at org.apache.hadoop.mapred.JobClient.runJob(JobClient.java:1251) > > at > > > > > com.BitSight.hadoopAggregator.AggregatorDriver.run(AggregatorDriver.java:89) > > at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:65) > > at > > > > > com.BitSight.hadoopAggregator.AggregatorDriver.main(AggregatorDriver.java:94) > > at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) > > at > > > > > sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) > > at > > > > > sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) > > at java.lang.reflect.Method.invoke(Method.java:597) > > at org.apache.hadoop.util.RunJar.main(RunJar.java:156) > > > > However, I can access these logs directly from the tasktracker's logs > > (through the web UI). For the sakes of running this locally, I could > just > > ignore this error, however I want to be able to profile the job once > > deployed to our hadoop cluster and need to be able to automatically > > retrieve these logs. Do I need to change the permissions in HDFS to allow > > for this? Any ideas on how to fix this? Thanks in advance, > > > > Best, > > -Leo > > > > -- > > Leo Urbina > > Massachusetts Institute of Technology > > Department of Electrical Engineering and Computer Science > > Department of Mathematics > > lurb...@mit.edu > > > -- Leo Urbina Massachusetts Institute of Technology Department of Electrical Engineering and Computer Science Department of Mathematics lurb...@mit.edu
