Take a look at http://hadoop.apache.org/docs/r1.0.3/cluster_setup.html
and look for 'Using the LinuxTaskController' It has the info on what the permission and ownership of the task controller executable should be. -- Arpit Gupta Hortonworks Inc. http://hortonworks.com/ On Sep 17, 2012, at 8:04 PM, Yongzhi Wang <[email protected]> wrote: > Dear All, > > I am currently deploying hadoop 1.0.3 on my Debian 32-bit Linux. I > think need a 32-bit binary file taskcontroller. However, I found the > binary > files provided in hadoop 1.0.3 is 64 bit. I downloaded the hadoop > build file from server jenkins > (https://builds.apache.org/job/Hadoop-1.0-Build/ws/trunk/build/c++-build/Linux-i386-32/task-controller/). > It's still a 64 bit file. > > I got the following errors when I start task tracker using the hadoop > 64-bit taskcontroller: > > 12/09/17 11:59:58 ERROR mapred.TaskTracker: Can not start task tracker > because java.io.IOException: Task controller setup failed because of > invalidpermissions/ownership with exit code 126 > at > org.apache.hadoop.mapred.LinuxTaskController.setup(LinuxTaskController.java:143) > at org.apache.hadoop.mapred.TaskTracker.<init>(TaskTracker.java:1452) > at org.apache.hadoop.mapred.TaskTracker.main(TaskTracker.java:3742) > Caused by: org.apache.hadoop.util.Shell$ExitCodeException: > /opt/ywang/hadoop-1.0.3/libexec/../bin/task-controller: > /opt/ywang/hadoop-1.0.3/libexec/../bin/task-controller: cannot execute > binary file > > at org.apache.hadoop.util.Shell.runCommand(Shell.java:255) > at org.apache.hadoop.util.Shell.run(Shell.java:182) > at > org.apache.hadoop.util.Shell$ShellCommandExecutor.execute(Shell.java:375) > at > org.apache.hadoop.mapred.LinuxTaskController.setup(LinuxTaskController.java:137) > > I am wondering if not providing 32-bit of taskcontroller is a build > bug, or 64-bit taskcontroller can be used somehow on the 32-bit > platform? If no 32-bit executable is provided in the daily build of > hadoop, how can I build one by myself? > > Thanks!
