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From kant kodali <kanth...@gmail.com>
Subject Re: java.lang.OutOfMemoryError: unable to create new native thread
Date Mon, 31 Oct 2016 03:04:48 GMT
yes I did run ps -ef | grep "app_name" and it is root.



On Sun, Oct 30, 2016 at 8:00 PM, Chan Chor Pang <chin-sh@indetail.co.jp>
wrote:

> sorry, the UID
>
> On 10/31/16 11:59 AM, Chan Chor Pang wrote:
>
> actually if the max user processes is not the problem, i have no idea
>
> but i still suspecting the user,
> as the user who run spark-submit is not necessary the pid for the JVM
> process
>
> can u make sure when you "ps -ef | grep {your app id} " the PID is root?
> On 10/31/16 11:21 AM, kant kodali wrote:
>
> The java process is run by the root and it has the same config
>
> sudo -i
>
> ulimit -a
>
> core file size          (blocks, -c) 0
> data seg size           (kbytes, -d) unlimited
> scheduling priority             (-e) 0
> file size               (blocks, -f) unlimited
> pending signals                 (-i) 120242
> max locked memory       (kbytes, -l) 64
> max memory size         (kbytes, -m) unlimited
> open files                      (-n) 1024
> pipe size            (512 bytes, -p) 8
> POSIX message queues     (bytes, -q) 819200
> real-time priority              (-r) 0
> stack size              (kbytes, -s) 8192
> cpu time               (seconds, -t) unlimited
> max user processes              (-u) 120242
> virtual memory          (kbytes, -v) unlimited
> file locks                      (-x) unlimited
>
>
>
> On Sun, Oct 30, 2016 at 7:01 PM, Chan Chor Pang <chin-sh@indetail.co.jp>
> wrote:
>
>> I have the same Exception before and the problem fix after i change the
>> nproc conf.
>>
>> > max user processes              (-u) 120242
>> ↑this config does looks good.
>> are u sure the user who run ulimit -a is the same user who run the Java
>> process?
>> depend on how u submit the job and your setting, spark job may execute by
>> other user.
>>
>>
>> On 10/31/16 10:38 AM, kant kodali wrote:
>>
>> when I did this
>>
>> cat /proc/sys/kernel/pid_max
>>
>> I got 32768
>>
>> On Sun, Oct 30, 2016 at 6:36 PM, kant kodali <kanth909@gmail.com> wrote:
>>
>>> I believe for ubuntu it is unlimited but I am not 100% sure (I just read
>>> somewhere online). I ran ulimit -a and this is what I get
>>>
>>> core file size          (blocks, -c) 0
>>> data seg size           (kbytes, -d) unlimited
>>> scheduling priority             (-e) 0
>>> file size               (blocks, -f) unlimited
>>> pending signals                 (-i) 120242
>>> max locked memory       (kbytes, -l) 64
>>> max memory size         (kbytes, -m) unlimited
>>> open files                      (-n) 1024
>>> pipe size            (512 bytes, -p) 8
>>> POSIX message queues     (bytes, -q) 819200
>>> real-time priority              (-r) 0
>>> stack size              (kbytes, -s) 8192
>>> cpu time               (seconds, -t) unlimited
>>> max user processes              (-u) 120242
>>> virtual memory          (kbytes, -v) unlimited
>>> file locks                      (-x) unlimited
>>>
>>> On Sun, Oct 30, 2016 at 6:15 PM, Chan Chor Pang <chin-sh@indetail.co.jp>
>>> wrote:
>>>
>>>> not sure for ubuntu, but i think you can just create the file by
>>>> yourself
>>>> the syntax will be the same as /etc/security/limits.conf
>>>>
>>>> nproc.conf not only limit java process but all process by the same user
>>>> so even the jvm process does nothing,  if the corresponding user is
>>>> busy in other way
>>>> the jvm process will still not able to create new thread.
>>>>
>>>> btw the default limit for centos is 1024
>>>>
>>>>
>>>> On 10/31/16 9:51 AM, kant kodali wrote:
>>>>
>>>>
>>>> On Sun, Oct 30, 2016 at 5:22 PM, Chan Chor Pang <chin-sh@indetail.co.jp
>>>> > wrote:
>>>>
>>>>> /etc/security/limits.d/90-nproc.conf
>>>>>
>>>>
>>>> Hi,
>>>>
>>>> I am using Ubuntu 16.04 LTS. I have this directory
>>>> /etc/security/limits.d/ but I don't have any files underneath it. This
>>>> error happens after running for 4 to 5 hours. I wonder if this is a GC
>>>> issue? And I am thinking if I should use CMS. I have also posted this on
SO
>>>> since I havent got much response for this question
>>>> http://stackoverflow.com/questions/40315589/dag-sch
>>>> eduler-event-loop-java-lang-outofmemoryerror-unable-to-creat
>>>> e-new-native
>>>>
>>>>
>>>> Thanks,
>>>> kant
>>>>
>>>>
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