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Posted to dev@spark.apache.org by shane knapp <sk...@berkeley.edu> on 2015/10/21 00:24:07 UTC

BUILD SYSTEM: builds are OOMing the jenkins workers, investigating. also need to reboot amp-jenkins-worker-06

starting this saturday (oct 17) we started getting alerts on the
jenkins workers that various processes were dying (specifically ssh).

since then, we've had half of our workers OOM due to java processes
and have had now to reboot two of them (-05 and -06).

if we look at the current machine that's wedged (amp-jenkins-worker-06), we see:
https://amplab.cs.berkeley.edu/jenkins/job/Spark-Master-SBT/AMPLAB_JENKINS_BUILD_PROFILE=hadoop1.0,label=spark-test/3814/
https://amplab.cs.berkeley.edu/jenkins/job/Spark-Master-Maven-pre-YARN/HADOOP_VERSION=2.0.0-mr1-cdh4.1.2,label=spark-test/4508/
https://amplab.cs.berkeley.edu/jenkins/job/Spark-Master-Maven-pre-YARN/HADOOP_VERSION=1.2.1,label=spark-test/4508/
https://amplab.cs.berkeley.edu/jenkins/job/Spark-Master-Maven-with-YARN/3868/
https://amplab.cs.berkeley.edu/jenkins/job/Spark-Compile-Master-Maven-with-YARN/4510/

have there been any changes to any of these builds that might have
caused this?  anyone have any ideas?

sadly, even though i saw that -06 was about to OOM and got a shell
opened before SSH died, my command prompt is completely unresponsive.
:(

shane

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Re: BUILD SYSTEM: builds are OOMing the jenkins workers, investigating. also need to reboot amp-jenkins-worker-06

Posted by shane knapp <sk...@berkeley.edu>.
well, it was -08, and ssh stopped working (according to the alerts)
just as i was logging in to kill off any errant processes.  i've taken
that worker offline in jenkins and will be rebooting it asap.

on a positive note, i was able to clear out -07 before anything
horrible happened to that one.

On Tue, Oct 20, 2015 at 3:46 PM, shane knapp <sk...@berkeley.edu> wrote:
> amp-jenkins-worker-06 is back up.
>
> my next bets are on -07 and -08...  :\
>
> https://amplab.cs.berkeley.edu/jenkins/computer/
>
> On Tue, Oct 20, 2015 at 3:39 PM, shane knapp <sk...@berkeley.edu> wrote:
>> here's the related stack trace from dmesg...  UID 500 is jenkins.
>>
>> Out of memory: Kill process 142764 (java) score 40 or sacrifice child
>> Killed process 142764, UID 500, (java) total-vm:24685036kB,
>> anon-rss:5730824kB, file-rss:64kB
>> Uhhuh. NMI received for unknown reason 21 on CPU 0.
>> Do you have a strange power saving mode enabled?
>> Dazed and confused, but trying to continue
>> java: page allocation failure. order:2, mode:0xd0
>> Pid: 142764, comm: java Not tainted 2.6.32-573.3.1.el6.x86_64 #1
>> Call Trace:
>>  [<ffffffff8113770c>] ? __alloc_pages_nodemask+0x7dc/0x950
>>  [<ffffffff81074fa8>] ? copy_process+0x168/0x1530
>>  [<ffffffff810764c6>] ? do_fork+0x96/0x4c0
>>  [<ffffffff810b828b>] ? sys_futex+0x7b/0x170
>>  [<ffffffff81009598>] ? sys_clone+0x28/0x30
>>  [<ffffffff8100b3f3>] ? stub_clone+0x13/0x20
>>  [<ffffffff8100b0d2>] ? system_call_fastpath+0x16/0x1b
>>
>> On Tue, Oct 20, 2015 at 3:35 PM, shane knapp <sk...@berkeley.edu> wrote:
>>> -06 just kinda came back...
>>>
>>> [root@amp-jenkins-worker-06 ~]# uptime
>>>  15:29:07 up 26 days,  7:34,  2 users,  load average: 1137.91, 1485.69, 1635.89
>>>
>>> the builds that, from looking at the process table, seem to be at
>>> fault are the Spark-Master-Maven-pre-yarn matrix builds, and possibly
>>> a Spark-Master-SBT matrix build.  look at the build history here:
>>> https://amplab.cs.berkeley.edu/jenkins/computer/amp-jenkins-worker-06/builds
>>>
>>> the load is dropping significantly and quickly, but swap is borked and
>>> i'm still going to reboot.
>>>
>>> On Tue, Oct 20, 2015 at 3:24 PM, shane knapp <sk...@berkeley.edu> wrote:
>>>> starting this saturday (oct 17) we started getting alerts on the
>>>> jenkins workers that various processes were dying (specifically ssh).
>>>>
>>>> since then, we've had half of our workers OOM due to java processes
>>>> and have had now to reboot two of them (-05 and -06).
>>>>
>>>> if we look at the current machine that's wedged (amp-jenkins-worker-06), we see:
>>>> https://amplab.cs.berkeley.edu/jenkins/job/Spark-Master-SBT/AMPLAB_JENKINS_BUILD_PROFILE=hadoop1.0,label=spark-test/3814/
>>>> https://amplab.cs.berkeley.edu/jenkins/job/Spark-Master-Maven-pre-YARN/HADOOP_VERSION=2.0.0-mr1-cdh4.1.2,label=spark-test/4508/
>>>> https://amplab.cs.berkeley.edu/jenkins/job/Spark-Master-Maven-pre-YARN/HADOOP_VERSION=1.2.1,label=spark-test/4508/
>>>> https://amplab.cs.berkeley.edu/jenkins/job/Spark-Master-Maven-with-YARN/3868/
>>>> https://amplab.cs.berkeley.edu/jenkins/job/Spark-Compile-Master-Maven-with-YARN/4510/
>>>>
>>>> have there been any changes to any of these builds that might have
>>>> caused this?  anyone have any ideas?
>>>>
>>>> sadly, even though i saw that -06 was about to OOM and got a shell
>>>> opened before SSH died, my command prompt is completely unresponsive.
>>>> :(
>>>>
>>>> shane

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Re: BUILD SYSTEM: builds are OOMing the jenkins workers, investigating. also need to reboot amp-jenkins-worker-06

Posted by shane knapp <sk...@berkeley.edu>.
amp-jenkins-worker-06 is back up.

my next bets are on -07 and -08...  :\

https://amplab.cs.berkeley.edu/jenkins/computer/

On Tue, Oct 20, 2015 at 3:39 PM, shane knapp <sk...@berkeley.edu> wrote:
> here's the related stack trace from dmesg...  UID 500 is jenkins.
>
> Out of memory: Kill process 142764 (java) score 40 or sacrifice child
> Killed process 142764, UID 500, (java) total-vm:24685036kB,
> anon-rss:5730824kB, file-rss:64kB
> Uhhuh. NMI received for unknown reason 21 on CPU 0.
> Do you have a strange power saving mode enabled?
> Dazed and confused, but trying to continue
> java: page allocation failure. order:2, mode:0xd0
> Pid: 142764, comm: java Not tainted 2.6.32-573.3.1.el6.x86_64 #1
> Call Trace:
>  [<ffffffff8113770c>] ? __alloc_pages_nodemask+0x7dc/0x950
>  [<ffffffff81074fa8>] ? copy_process+0x168/0x1530
>  [<ffffffff810764c6>] ? do_fork+0x96/0x4c0
>  [<ffffffff810b828b>] ? sys_futex+0x7b/0x170
>  [<ffffffff81009598>] ? sys_clone+0x28/0x30
>  [<ffffffff8100b3f3>] ? stub_clone+0x13/0x20
>  [<ffffffff8100b0d2>] ? system_call_fastpath+0x16/0x1b
>
> On Tue, Oct 20, 2015 at 3:35 PM, shane knapp <sk...@berkeley.edu> wrote:
>> -06 just kinda came back...
>>
>> [root@amp-jenkins-worker-06 ~]# uptime
>>  15:29:07 up 26 days,  7:34,  2 users,  load average: 1137.91, 1485.69, 1635.89
>>
>> the builds that, from looking at the process table, seem to be at
>> fault are the Spark-Master-Maven-pre-yarn matrix builds, and possibly
>> a Spark-Master-SBT matrix build.  look at the build history here:
>> https://amplab.cs.berkeley.edu/jenkins/computer/amp-jenkins-worker-06/builds
>>
>> the load is dropping significantly and quickly, but swap is borked and
>> i'm still going to reboot.
>>
>> On Tue, Oct 20, 2015 at 3:24 PM, shane knapp <sk...@berkeley.edu> wrote:
>>> starting this saturday (oct 17) we started getting alerts on the
>>> jenkins workers that various processes were dying (specifically ssh).
>>>
>>> since then, we've had half of our workers OOM due to java processes
>>> and have had now to reboot two of them (-05 and -06).
>>>
>>> if we look at the current machine that's wedged (amp-jenkins-worker-06), we see:
>>> https://amplab.cs.berkeley.edu/jenkins/job/Spark-Master-SBT/AMPLAB_JENKINS_BUILD_PROFILE=hadoop1.0,label=spark-test/3814/
>>> https://amplab.cs.berkeley.edu/jenkins/job/Spark-Master-Maven-pre-YARN/HADOOP_VERSION=2.0.0-mr1-cdh4.1.2,label=spark-test/4508/
>>> https://amplab.cs.berkeley.edu/jenkins/job/Spark-Master-Maven-pre-YARN/HADOOP_VERSION=1.2.1,label=spark-test/4508/
>>> https://amplab.cs.berkeley.edu/jenkins/job/Spark-Master-Maven-with-YARN/3868/
>>> https://amplab.cs.berkeley.edu/jenkins/job/Spark-Compile-Master-Maven-with-YARN/4510/
>>>
>>> have there been any changes to any of these builds that might have
>>> caused this?  anyone have any ideas?
>>>
>>> sadly, even though i saw that -06 was about to OOM and got a shell
>>> opened before SSH died, my command prompt is completely unresponsive.
>>> :(
>>>
>>> shane

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Re: BUILD SYSTEM: builds are OOMing the jenkins workers, investigating. also need to reboot amp-jenkins-worker-06

Posted by shane knapp <sk...@berkeley.edu>.
here's the related stack trace from dmesg...  UID 500 is jenkins.

Out of memory: Kill process 142764 (java) score 40 or sacrifice child
Killed process 142764, UID 500, (java) total-vm:24685036kB,
anon-rss:5730824kB, file-rss:64kB
Uhhuh. NMI received for unknown reason 21 on CPU 0.
Do you have a strange power saving mode enabled?
Dazed and confused, but trying to continue
java: page allocation failure. order:2, mode:0xd0
Pid: 142764, comm: java Not tainted 2.6.32-573.3.1.el6.x86_64 #1
Call Trace:
 [<ffffffff8113770c>] ? __alloc_pages_nodemask+0x7dc/0x950
 [<ffffffff81074fa8>] ? copy_process+0x168/0x1530
 [<ffffffff810764c6>] ? do_fork+0x96/0x4c0
 [<ffffffff810b828b>] ? sys_futex+0x7b/0x170
 [<ffffffff81009598>] ? sys_clone+0x28/0x30
 [<ffffffff8100b3f3>] ? stub_clone+0x13/0x20
 [<ffffffff8100b0d2>] ? system_call_fastpath+0x16/0x1b

On Tue, Oct 20, 2015 at 3:35 PM, shane knapp <sk...@berkeley.edu> wrote:
> -06 just kinda came back...
>
> [root@amp-jenkins-worker-06 ~]# uptime
>  15:29:07 up 26 days,  7:34,  2 users,  load average: 1137.91, 1485.69, 1635.89
>
> the builds that, from looking at the process table, seem to be at
> fault are the Spark-Master-Maven-pre-yarn matrix builds, and possibly
> a Spark-Master-SBT matrix build.  look at the build history here:
> https://amplab.cs.berkeley.edu/jenkins/computer/amp-jenkins-worker-06/builds
>
> the load is dropping significantly and quickly, but swap is borked and
> i'm still going to reboot.
>
> On Tue, Oct 20, 2015 at 3:24 PM, shane knapp <sk...@berkeley.edu> wrote:
>> starting this saturday (oct 17) we started getting alerts on the
>> jenkins workers that various processes were dying (specifically ssh).
>>
>> since then, we've had half of our workers OOM due to java processes
>> and have had now to reboot two of them (-05 and -06).
>>
>> if we look at the current machine that's wedged (amp-jenkins-worker-06), we see:
>> https://amplab.cs.berkeley.edu/jenkins/job/Spark-Master-SBT/AMPLAB_JENKINS_BUILD_PROFILE=hadoop1.0,label=spark-test/3814/
>> https://amplab.cs.berkeley.edu/jenkins/job/Spark-Master-Maven-pre-YARN/HADOOP_VERSION=2.0.0-mr1-cdh4.1.2,label=spark-test/4508/
>> https://amplab.cs.berkeley.edu/jenkins/job/Spark-Master-Maven-pre-YARN/HADOOP_VERSION=1.2.1,label=spark-test/4508/
>> https://amplab.cs.berkeley.edu/jenkins/job/Spark-Master-Maven-with-YARN/3868/
>> https://amplab.cs.berkeley.edu/jenkins/job/Spark-Compile-Master-Maven-with-YARN/4510/
>>
>> have there been any changes to any of these builds that might have
>> caused this?  anyone have any ideas?
>>
>> sadly, even though i saw that -06 was about to OOM and got a shell
>> opened before SSH died, my command prompt is completely unresponsive.
>> :(
>>
>> shane

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Re: BUILD SYSTEM: builds are OOMing the jenkins workers, investigating. also need to reboot amp-jenkins-worker-06

Posted by shane knapp <sk...@berkeley.edu>.
ok, based on the timing, i *think* this might be the culprit:

https://amplab.cs.berkeley.edu/jenkins/job/Spark-Master-SBT/AMPLAB_JENKINS_BUILD_PROFILE=hadoop1.0,label=spark-test/3814/console

On Tue, Oct 20, 2015 at 3:35 PM, shane knapp <sk...@berkeley.edu> wrote:
> -06 just kinda came back...
>
> [root@amp-jenkins-worker-06 ~]# uptime
>  15:29:07 up 26 days,  7:34,  2 users,  load average: 1137.91, 1485.69, 1635.89
>
> the builds that, from looking at the process table, seem to be at
> fault are the Spark-Master-Maven-pre-yarn matrix builds, and possibly
> a Spark-Master-SBT matrix build.  look at the build history here:
> https://amplab.cs.berkeley.edu/jenkins/computer/amp-jenkins-worker-06/builds
>
> the load is dropping significantly and quickly, but swap is borked and
> i'm still going to reboot.
>
> On Tue, Oct 20, 2015 at 3:24 PM, shane knapp <sk...@berkeley.edu> wrote:
>> starting this saturday (oct 17) we started getting alerts on the
>> jenkins workers that various processes were dying (specifically ssh).
>>
>> since then, we've had half of our workers OOM due to java processes
>> and have had now to reboot two of them (-05 and -06).
>>
>> if we look at the current machine that's wedged (amp-jenkins-worker-06), we see:
>> https://amplab.cs.berkeley.edu/jenkins/job/Spark-Master-SBT/AMPLAB_JENKINS_BUILD_PROFILE=hadoop1.0,label=spark-test/3814/
>> https://amplab.cs.berkeley.edu/jenkins/job/Spark-Master-Maven-pre-YARN/HADOOP_VERSION=2.0.0-mr1-cdh4.1.2,label=spark-test/4508/
>> https://amplab.cs.berkeley.edu/jenkins/job/Spark-Master-Maven-pre-YARN/HADOOP_VERSION=1.2.1,label=spark-test/4508/
>> https://amplab.cs.berkeley.edu/jenkins/job/Spark-Master-Maven-with-YARN/3868/
>> https://amplab.cs.berkeley.edu/jenkins/job/Spark-Compile-Master-Maven-with-YARN/4510/
>>
>> have there been any changes to any of these builds that might have
>> caused this?  anyone have any ideas?
>>
>> sadly, even though i saw that -06 was about to OOM and got a shell
>> opened before SSH died, my command prompt is completely unresponsive.
>> :(
>>
>> shane

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Re: BUILD SYSTEM: builds are OOMing the jenkins workers, investigating. also need to reboot amp-jenkins-worker-06

Posted by shane knapp <sk...@berkeley.edu>.
-06 just kinda came back...

[root@amp-jenkins-worker-06 ~]# uptime
 15:29:07 up 26 days,  7:34,  2 users,  load average: 1137.91, 1485.69, 1635.89

the builds that, from looking at the process table, seem to be at
fault are the Spark-Master-Maven-pre-yarn matrix builds, and possibly
a Spark-Master-SBT matrix build.  look at the build history here:
https://amplab.cs.berkeley.edu/jenkins/computer/amp-jenkins-worker-06/builds

the load is dropping significantly and quickly, but swap is borked and
i'm still going to reboot.

On Tue, Oct 20, 2015 at 3:24 PM, shane knapp <sk...@berkeley.edu> wrote:
> starting this saturday (oct 17) we started getting alerts on the
> jenkins workers that various processes were dying (specifically ssh).
>
> since then, we've had half of our workers OOM due to java processes
> and have had now to reboot two of them (-05 and -06).
>
> if we look at the current machine that's wedged (amp-jenkins-worker-06), we see:
> https://amplab.cs.berkeley.edu/jenkins/job/Spark-Master-SBT/AMPLAB_JENKINS_BUILD_PROFILE=hadoop1.0,label=spark-test/3814/
> https://amplab.cs.berkeley.edu/jenkins/job/Spark-Master-Maven-pre-YARN/HADOOP_VERSION=2.0.0-mr1-cdh4.1.2,label=spark-test/4508/
> https://amplab.cs.berkeley.edu/jenkins/job/Spark-Master-Maven-pre-YARN/HADOOP_VERSION=1.2.1,label=spark-test/4508/
> https://amplab.cs.berkeley.edu/jenkins/job/Spark-Master-Maven-with-YARN/3868/
> https://amplab.cs.berkeley.edu/jenkins/job/Spark-Compile-Master-Maven-with-YARN/4510/
>
> have there been any changes to any of these builds that might have
> caused this?  anyone have any ideas?
>
> sadly, even though i saw that -06 was about to OOM and got a shell
> opened before SSH died, my command prompt is completely unresponsive.
> :(
>
> shane

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