I didn't leave it running. Since you have been able reproduce the problem, could you dump the memory after a few days, and see if there's any obvious reasons why it would run out of memory? It just doesn't make any sense.
-Eric On Fri, Dec 13, 2013 at 4:17 PM, Terry P. <[email protected]> wrote: > Hi Eric, > Did your standby GC eventually fail on you with an OOME? > > I was able to reproduce the standby GC failure after about 6 days running > in standby mode again on my Ops cluster after a cluster restart following > the Thanksgiving holiday week. > > Thanks, > Terry > > > > On Wed, Dec 4, 2013 at 4:33 PM, Terry P. <[email protected]> wrote: > >> Thanks for testing Eric. I have nproc set hard to 32000 on all my nodes, >> and just double checked it's correct on the Secondary Namenode where this >> is happening on. nofile is set hard to 64000 so it's not a files/sockets >> issue either. >> >> Please let me know if it eventually fails for you. >> >> >> >> On Wed, Dec 4, 2013 at 3:41 PM, Eric Newton <[email protected]>wrote: >> >>> I fired up a standby GC after I reduced the wait time between zookeeper >>> lock checks to 10ms, and changed the memory from 256M to 56M. It's been >>> running for the last hour. I didn't expect it to fail, but I wanted to >>> make sure it wasn't reproducible. >>> >>> It's possible that you are running up against an nproc limit. We've >>> seen out of memory issues when the JVM can't create a new thread. >>> >>> (I ran the test with 1.4.5-SNAPSHOT) >>> >>> -Eric >>> >>> >>> On Wed, Dec 4, 2013 at 2:31 PM, Eric Newton <[email protected]>wrote: >>> >>>> I don't know if anyone is running a standby GC. Can you go ahead and >>>> open a ticket? >>>> >>>> -Eric >>>> >>>> >>>> >>>> On Wed, Dec 4, 2013 at 2:29 PM, Terry P. <[email protected]> wrote: >>>> >>>>> Greetings folks, >>>>> With Accumulo 1.4.2 I'm running Standby Master and GC processes on my >>>>> Secondary Namenode. I've found that my Standby GC gets terminated due to >>>>> OutOfMemoryError errors after about 6 days of running, even though it is >>>>> running in standby mode only. The Standby Master is still running fine >>>>> after 3 weeks of standby mode. >>>>> >>>>> My accumulo-env.sh script is using the 3GB environment default GC >>>>> memory options of -Xmx256m -Xms256m, same as on the Master where the >>>>> primary GC runs and has never gotten an OOME. At this point I don't see >>>>> any >>>>> reason to try increasing that as my bet is it will only delay the OOME. >>>>> >>>>> Anyone else running standby GC and running into this (or working fine)? >>>>> >>>> >>>> >>> >> >
