It’s 4000. Does this mean that sum of all child open files should not exceed 
this value? Because I see that task limit is also 4000.


> On Dec 29, 2016, at 19:48, haosdent <haosd...@gmail.com> wrote:
> 
> Hi, @Kiril It sounds like your executor reaches max open file limit. May you 
> show the result of
> 
> $ cat /proc/${your_executor_pid}/limits
> 
> 
> 
> On Fri, Dec 30, 2016 at 1:07 AM, Kiril Menshikov <kmenshi...@gmail.com 
> <mailto:kmenshi...@gmail.com>> wrote:
> ​Hi,
> 
> I have executor which run java programs. One executor execute around 800 
> tasks. Last ~100 failed with "Too many open files". I increased nofile and 
> nproc limits. During my debug I could not say that problem in in the tasks. 
> But some times linux reach limits. I see some boxes are good with out 'Too 
> many open files errors'. But some has such errors.
> 
> I run executor through mesos-containerizer and isolation is 
> posix/cpu,posix/mem.
> 
> Can some one explain why this happens? Is it better to create separate 
> executor for each task? Tasks have common code but has different commands.
> 
> Any help are welcomed.
> 
> mesos-containerizer launch --command={"shell":true,"value":"java -cp 
> executor-all-1.0.jar com.stone.mesos.MesosTestExecutor"} 
> --environment={"LIBPROCESS_IP":"10.10.10.10","LIBPROCESS_PORT":"0","MESOS_AGENT_ENDPOINT":"10.10.10.10:5051
>  
> <http://10.10.10.10:5051/>","MESOS_CHECKPOINT":"1","MESOS_DIRECTORY":"\/var\/lib\/mesos\/slaves\/7e30a916-1296-4f47-813a-0972030b6907-S14\/frameworks\/7e30a916-1296-4f47-813a-0972030b6907-0020\/executors\/client_b12.tar-0f9e8f80-a217-4b28-bb5e-4dd7cc587381\/runs\/ee8857e2-ac19-4f07-810d-c2e71fbf522e","MESOS_EXECUTOR_ID":"client_b12.tar-0f9e8f80-a217-4b28-bb5e-4dd7cc587381","MESOS_EXECUTOR_SHUTDOWN_GRACE_PERIOD":"5secs","MESOS_FRAMEWORK_ID":"7e30a916-1296-4f47-813a-0972030b6907-0020","MESOS_HTTP_COMMAND_EXECUTOR":"0","MESOS_NATIVE_JAVA_LIBRARY":"\/usr\/local\/lib\/libmesos-1.1.0.so
>  
> <http://1.1.0.so/>","MESOS_NATIVE_LIBRARY":"\/usr\/local\/lib\/libmesos-1.1.0.so
>  
> <http://1.1.0.so/>","MESOS_RECOVERY_TIMEOUT":"15mins","MESOS_SANDBOX":"\/var\/lib\/mesos\/slaves\/7e30a916-1296-4f47-813a-0972030b6907-S14\/frameworks\/7e30a916-1296-4f47-813a-0972030b6907-0020\/executors\/client_b12.tar-0f9e8f80-a217-4b28-bb5e-4dd7cc587381\/runs\/ee8857e2-ac19-4f07-810d-c2e71fbf522e","MESOS_SLAVE_ID":"7e30a916-1296-4f47-813a-0972030b6907-S14","MESOS_SLAVE_PID":"slave(1)@10.10.10.10:5051
>  
> <http://10.10.10.10:5051/>","MESOS_SUBSCRIPTION_BACKOFF_MAX":"2secs","PATH":"\/usr\/local\/sbin:\/usr\/local\/bin:\/usr\/sbin:\/usr\/bin:\/sbin:\/bin"}
>  --help=false --pipe_read=12 --pipe_write=13 --pre_exec_commands=[] 
> --runtime_directory=/var/run/mesos/containers/ee8857e2-ac19-4f07-810d-c2e71fbf522e
>  --unshare_namespace_mnt=false --user=ec2-user 
> --working_directory=/var/lib/mesos/slaves/7e30a916-1296-4f47-813a-0972030b6907-S14/frameworks/7e30a916-1296-4f47-813a-0972030b6907-0020/executors/client_b12.tar-0f9e8f80-a217-4b28-bb5e-4dd7cc587381/runs/ee8857e2-ac19-4f07-810d-c2e71fbf522e
> 
> Thanks,
> -Kiril​
> 
> 
> 
> -- 
> Best Regards,
> Haosdent Huang

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