Thanks for creating the test program. I debugged this and it is a separate issue from the java exit issue that came up earlier. This is a pretty tight race in the interaction of a multi-threaded app with vfork. I pushed a fix for OS-5360 today.
Thanks again, Jerry On Fri, Apr 22, 2016 at 4:48 PM, Danny Wilson <[email protected]> wrote: > Took me a minute but this seems to do it (though not on every run): > > class Testy { > public static void main(String[] args) { > System.out.println("Spawning 3 threads"); > Thread t1 = new Thread() { public void run() { try { > Runtime.getRuntime().exec("sleep", new String[]{ "1" }).waitFor(); } > catch(Exception e) { e.printStackTrace(); } System.out.println("Finished > 1"); } }; > Thread t2 = new Thread() { public void run() { try { > Runtime.getRuntime().exec("sleep", new String[]{ "2" }).waitFor(); } > catch(Exception e) { e.printStackTrace(); } System.out.println("Finished > 2"); } }; > Thread t3 = new Thread() { public void run() { try { > Runtime.getRuntime().exec("sleep", new String[]{ "3" }).waitFor(); } > catch(Exception e) { e.printStackTrace(); } System.out.println("Finished > 3"); } }; > Thread t4 = new Thread() { public void run() { try { > Runtime.getRuntime().exec("sleep", new String[]{ "4" }).waitFor(); } > catch(Exception e) { e.printStackTrace(); } System.out.println("Finished > 4"); } }; > > System.out.println("Starting 1"); > t1.start(); > System.out.println("Starting 2"); > t2.start(); > System.out.println("Starting 3"); > t3.start(); > System.out.println("Starting 4"); > t4.start(); > > System.out.println("Kthxbye"); > } > } > > > $ javac Testy.java ; java Testy > Spawning 3 threads > Starting 1 > Starting 2 > Starting 3 > Starting 4 > Kthxbye > Finished 4 > Finished 3 > Finished 1 > > ....Hangs > > > > > On Sat, Apr 23, 2016, at 12:07 AM, Elijah Zupancic wrote: > > Do you have a simple Java program that illustrates this? > > Thanks, > Elijah > > On Fri, Apr 22, 2016 at 3:06 PM, Danny Wilson <[email protected]> wrote: > > > But, the fix seems to work a little too good... > > Looks like processes aren't stopping when finished like they used to :D > > (tried master-20160422T105600Z) > > A little more detail: > > Non-finishing proceses occur when multiple threads do Runtime.exec(). > If I change my program to use only 1 thread that execs, there's no > issue. > > > > > > > > On Fri, Apr 22, 2016, at 06:05 PM, Robert Mustacchi wrote: > > > On 4/22/16 8:48 , Elijah Zupancic wrote: > > > > Hi Danny, > > > > > > > > The fix is included in the latest platform image available from the > dev > > > > channel. > > > > > > Channels are an SDC-ism so if you're just running straight up SmartOS, > > > this may be a bit confusing. In this case, the fix will be in the > > > upcoming release on April 28th. There are nightly builds available > > > though in manta if that's something you're interested in. > > > > > > Robert > > > > > > > On Apr 22, 2016 8:45 AM, "Danny Wilson" <[email protected]> wrote: > > > > > > > >> That's great to hear, I'm experiencing this issue as well. > > > >> > > > >> Is there an updated SmartOS build I could try? :-) > > > >> > > > >> > > > >> On Mon, Apr 18, 2016, at 06:06 PM, Elijah Zupancic wrote: > > > >> > > > >> This issue has now been fixed and checked in. If you are interested > the > > > >> details are here: https://smartos.org/bugview/OS-5323 > > > >> > > > >> On Wed, Apr 13, 2016 at 12:23 AM, Jakob Borg <[email protected]> wrote: > > > >> > > > >> For what it's worth, I've seen the same or similar behavior with > Java > > > >> processes (Jenkins build slave) under LX (latest platform as of > last week) > > > >> without any Docker involvement. In the end I didn't do the full > tracing to > > > >> debug it - I moved it to KVM instead. But the base behavior of the > Jenkins > > > >> slave process just suddenly exiting very soon after running a git > command, > > > >> with no error message in sight anywhere, was very reproducible. > > > >> > > > >> > > > >> //jb > > > >> > > > >> 2016-04-12 12:06 GMT+02:00 Nigel Magnay <[email protected]>: > > > >> > > > >> > > > >> Ok - I can successfully recreate this on the public cloud - I'll > send you > > > >> some details separately. > > > >> > > > >> > > > >> On Mon, Apr 11, 2016 at 9:08 PM, Nigel Magnay < > [email protected]> > > > >> wrote: > > > >> > > > >> > > > >> Sure - I'm going to try and get a test container up on the Joyent > cloud to > > > >> at least see if it does the same thing there. > > > >> > > > >> Interestingly, it looks like it's timing related. If I attach a java > > > >> debugger to a debug socket when running the build, it doesn't seem > to fail. > > > >> > > > >> > > > >> > > > >> On Mon, Apr 11, 2016 at 8:28 PM, Elijah Zupancic < > [email protected]> > > > >> wrote: > > > >> > > > >> > > > >> Hi Nigel, > > > >> > > > >> I'm trying to verify this bug. I wasn't able to get your Dockerfile > to > > > >> build because it was missing associated files. Is there a way for > you to > > > >> build the Docker image and push it to Docker hub? If so, could you > then try > > > >> to distill the repro steps down to a single command that I can > execute > > > >> using docker exec? > > > >> > > > >> Thanks, > > > >> Elijah > > > >> > > > >> ... > > > >> > > > >> > > > >> > > > >> > > > >> -- > > > >> -Elijah > > > >> *smartos-discuss* | Archives > > > >> <https://www.listbox.com/member/archive/184463/=now> > > > >> < > https://www.listbox.com/member/archive/rss/184463/27824080-914e3e6d> | > > > >> Modify <https://www.listbox.com/member/?&;> Your Subscription > > > >> <http://www.listbox.com> > > > >> > > > >> > > > >> *smartos-discuss* | Archives > > > >> <https://www.listbox.com/member/archive/184463/=now> > > > >> < > https://www.listbox.com/member/archive/rss/184463/27862676-268a510e> | > > > >> Modify > > > >> <https://www.listbox.com/member/?&;> > > > >> Your Subscription <http://www.listbox.com> > > > >> > > > > > > > > > > > > > > > > > > > > > http://www.listbox.com > > > > > -- > -Elijah > *smartos-discuss* | Archives > <https://www.listbox.com/member/archive/184463/=now> > <https://www.listbox.com/member/archive/rss/184463/27824080-914e3e6d> | > Modify <https://www.listbox.com/member/?&;> Your Subscription > <http://www.listbox.com> > > > *smartos-discuss* | Archives > <https://www.listbox.com/member/archive/184463/=now> > <https://www.listbox.com/member/archive/rss/184463/21516906-2011406d> | > Modify > <https://www.listbox.com/member/?&;> > Your Subscription <http://www.listbox.com> > ------------------------------------------- smartos-discuss Archives: https://www.listbox.com/member/archive/184463/=now RSS Feed: https://www.listbox.com/member/archive/rss/184463/25769125-55cfbc00 Modify Your Subscription: https://www.listbox.com/member/?member_id=25769125&id_secret=25769125-7688e9fb Powered by Listbox: http://www.listbox.com
