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MapReduce >> mail # user >> No 32-bit taskcontroller on Hadoop 1.0.3

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Re: No 32-bit taskcontroller on Hadoop 1.0.3
Take a look at


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.

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!