- sent from my phone, please excuse my handwriting. 

> On Jul 30, 2015, at 10:11 PM, haosdent <[email protected]> wrote:
> 
> >Eventually i diff'ed a working copy of a filesystem and found that 
> >/usr/local/libexec/mesos was missing. 
> How you install mesos?


I have my custom build. Nothing fancy just using my own versions of glog and 
the like

I generate a tar/deb and install it. Jenkins had a blip so that folder wasn't 
tared up




> 
>> On Fri, Jul 31, 2015 at 7:54 AM, Alexander Gallego <[email protected]> 
>> wrote:
>> I was debugging a mesos installation and came across this in the 
>> mesos-master.error log
>> 
>> E0730 22:09:32.288753   178 containerizer.cpp:556] Failed to determine the 
>> canonical path for the mesos-fetcher 
>> '/usr/local/libexec/mesos/mesos-fetcher': No such file or directory
>> 
>> The issue is that when you try to then launch a task you get a (w/ c++-filt)
>> 
>> $ c++filt 
>> _ZNSt5_BindIFPFiRKSsPPcRKN7process10Subprocess2IOES8_S8_PN2os7ExecEnvERK6OptionISt8functionIFivEEEPiSJ_SJ_ESsS3_S6_S6_S6_SB_SG_SJ_SJ_SJ_EE6__callIiJEJLm0ELm1ELm2ELm3ELm4ELm5ELm6ELm7ELm8ELm9EEEET_OSt5tupleIJDpT0_EESt12_Index_tupleIJXspT1_EEE
>> int std::_Bind<int (*(std::basic_string<char, std::char_traits<char>, 
>> std::allocator<char> >, char**, process::Subprocess::IO, 
>> process::Subprocess::IO, process::Subprocess::IO, os::ExecEnv*, 
>> Option<std::function<int ()> >, int*, int*, int*))(std::basic_string<char, 
>> std::char_traits<char>, std::allocator<char> > const&, char**, 
>> process::Subprocess::IO const&, process::Subprocess::IO const&, 
>> process::Subprocess::IO const&, os::ExecEnv*, Option<std::function<int ()> > 
>> const&, int*, int*, int*)>::__call<int, , 0ul, 1ul, 2ul, 3ul, 4ul, 5ul, 6ul, 
>> 7ul, 8ul, 9ul>(std::tuple<>&&, std::_Index_tuple<0ul, 1ul, 2ul, 3ul, 4ul, 
>> 5ul, 6ul, 7ul, 8ul, 9ul>)
>> 
>> 
>> which is basically impossible to realize that the error is here: 
>> 
>> https://github.com/apache/mesos/blob/master/3rdparty/libprocess/src/subprocess.cpp#L177
>> 
>> and that the source is that the fetcher is missing. 
>> 
>> Eventually i diff'ed a working copy of a filesystem and found that 
>> /usr/local/libexec/mesos was missing. 
>> 
>> 
>> Technically this isn't an error w/ mesos as in if the executables are in 
>> place, things will run smoothly. However, if part of mesos is not in the 
>> environment, then is the consensus to just 'attempt' to work instead of 
>> failing fast. i.e.: failing on startup with a log that says? 
>> 
>> mesos-fetcher missing, please check /usr/local/libexec/mesos (default) 
>> 
>> Just a thought. 
> 
> 
> 
> -- 
> Best Regards,
> Haosdent Huang

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