http://markmail.org/search/?q=hama-user%20Hangs%20on%20Pi%20example#query:hama-user%20Hangs%20on%20Pi%20example+page:1+mid:fcxt4a6uylia7lp2+state:results
Sorry, it's a bug. I'll fix it soon. Thanks. :) On Mon, Nov 1, 2010 at 2:19 PM, Lin Chia-Hung <[email protected]> wrote: > After rolling back to use hadoop 0.20.2, I think this problem is solved. > > But I notice that when executing the pi example `hama jar > build/hama-0.2.0-dev-examples.jar pi`, seems like it will stays > infinite at the state as below (it won't finish like hello example): > > 10/11/01 13:01:01 INFO bsp.BSPJobClient: Running job: job_201011011257_0002 > > Groom server processes are running on all machines and I can see the > estimated pi value printed in one of node's log. e.g. > > 2010-11-01 13:01:02,089 INFO > org.apache.hama.examples.PiEstimator$MyEstimator: Receives > messages:3.1372 > 2010-11-01 13:01:02,090 INFO org.apache.hama.examples.PiEstimator$MyEstimator: > Estimated value of PI is 3.1372 > > Is there any reason why it takes so a long time to accomplish a task? > > > 2010/11/1 Lin Chia-Hung <[email protected]>: >> I add the bsp.system.dir property to hama-site.xml, but the error >> message remains there; directly mkdir /tmp/hadoop-<user>/bsp/system in >> file system doesn't help either. >> >> The version of hama and hadoop (hdfs and common) I am using is trunk; >> zookeeper 3.3.1. >> >> Previously I tried using hadoop 0.20.x (as instruction in getting >> started - http://wiki.apache.org/hama/GettingStarted), but I notice in >> that version I can not execute fs command e.g. `hadoop fs -ls /' There >> is a hdfs property change which requires a patch; therefore I switch >> to use trunk (patch has been added and I can add my changes as well). >> >> Is there any restriction for hama to use hadoop version? >> >> Or any other places that I can check regarding to this problem? >> >> Thanks for help. >> >> 2010/10/30 Filipe David Manana <[email protected]>: >>> Which version of Hama are you using? >>> >>> For the latest, make sure your XML config has the following: >>> >>> <property> >>> <name>bsp.system.dir</name> >>> <value>${hadoop.tmp.dir}/bsp/system</value> >>> <description>The shared directory where BSP stores control files. >>> </description> >>> </property> >>> >>> Let us know if it fixes the issue for you. >>> >>> regards >>> >>> On Sat, Oct 30, 2010 at 9:24 AM, Lin Chia-Hung <[email protected]> >>> wrote: >>>> I follow the getting started page at >>>> http://wiki.apache.org/hama/GettingStarted#Setting_up_Hama setting up >>>> the hama system, but I keep getting the following error (saying the >>>> system dir is null.) >>>> >>>> After checking the /tmp/hadoop-${user}/bsp/, seems like there is no >>>> system dir as BSPMaster contains code that would throws ioexception if >>>> no system dir; but even adding system folder (e.g. touch >>>> /tmp/hadoop-${user}/bsp/system) it still throws this error. >>>> >>>> How can I solve this problem? >>>> >>>> 2010-10-30 16:16:59,585 INFO org.apache.hama.bsp.BSPMaster: problem >>>> cleaning system directory: null >>>> java.io.IOException: Call to lab01/140.127.220.29:9000 failed on local >>>> exception: java.io.EOFException >>>> at org.apache.hadoop.ipc.Client.wrapException(Client.java:774) >>>> at org.apache.hadoop.ipc.Client.call(Client.java:742) >>>> at org.apache.hadoop.ipc.RPC$Invoker.invoke(RPC.java:220) >>>> at $Proxy4.getProtocolVersion(Unknown Source) >>>> at org.apache.hadoop.ipc.RPC.getProxy(RPC.java:359) >>>> at >>>> org.apache.hadoop.hdfs.DFSClient.createRPCNamenode(DFSClient.java:105) >>>> at org.apache.hadoop.hdfs.DFSClient.<init>(DFSClient.java:208) >>>> at org.apache.hadoop.hdfs.DFSClient.<init>(DFSClient.java:169) >>>> at >>>> org.apache.hadoop.hdfs.DistributedFileSystem.initialize(DistributedFileSystem.java:82) >>>> at >>>> org.apache.hadoop.fs.FileSystem.createFileSystem(FileSystem.java:1373) >>>> at org.apache.hadoop.fs.FileSystem.access$200(FileSystem.java:66) >>>> at org.apache.hadoop.fs.FileSystem$Cache.get(FileSystem.java:1385) >>>> at org.apache.hadoop.fs.FileSystem.get(FileSystem.java:191) >>>> at org.apache.hadoop.fs.FileSystem.get(FileSystem.java:95) >>>> at org.apache.hama.bsp.BSPMaster.<init>(BSPMaster.java:131) >>>> at org.apache.hama.bsp.BSPMaster.startTracker(BSPMaster.java:237) >>>> at org.apache.hama.bsp.BSPMaster.startMaster(BSPMaster.java:230) >>>> at org.apache.hama.BSPMasterRunner.run(BSPMasterRunner.java:43) >>>> at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:65) >>>> at org.apache.hadoop.util.ToolRunner.run(ToolRunner.java:79) >>>> at org.apache.hama.BSPMasterRunner.main(BSPMasterRunner.java:53) >>>> Caused by: java.io.EOFException >>>> at java.io.DataInputStream.readInt(DataInputStream.java:375) >>>> at >>>> org.apache.hadoop.ipc.Client$Connection.receiveResponse(Client.java:501) >>>> at org.apache.hadoop.ipc.Client$Connection.run(Client.java:446) >>>> >>> >>> >>> >>> -- >>> Filipe David Manana, >>> [email protected], [email protected] >>> >>> "Reasonable men adapt themselves to the world. >>> Unreasonable men adapt the world to themselves. >>> That's why all progress depends on unreasonable men." >>> >> > -- Best Regards, Edward J. Yoon [email protected] http://blog.udanax.org
