Thank you for the answer! Shortly after writing to the list, we found that ticket ourselves. We think that it most likely is the cause (and solution) to our problems.
Hopefully we wont't see the crashes again. Best regards, Lasse Aagren On Nov 26, 2011, at 04:41 , Erick Erickson wrote: > Don't know if its this particular issue, but have you seen: > https://issues.apache.org/jira/browse/LUCENE-3588 > > Best > Erick > > On Fri, Nov 25, 2011 at 4:59 PM, Justin Caratzas > <justin.carat...@gmail.com> wrote: >> Lasse Aagren <aag...@dtic.dk> writes: >> >>> Hi, >>> >>> We are running Solr-Lucene 4.0-SNAPSHOT (1199777M - hudson - 2011-11-09 >>> 14:58:50) on severel servers running: >>> >>> 64bit Debian Squeeze (6.0.3) >>> OpenJDK6 (b18-1.8.9-0.1~squeeze1) >>> Tomcat 6.028 (6.0.28-9+squeeze1) >>> >>> Some of the servers have 48G RAM and in that case java have 16G (-Xmx16g) >>> and some of the servers have 96G RAM and in that case java have 48G >>> (-Xmx48G). >>> >>> We are seeing some inconsistent crashes of tomcat's JVM under different >>> Solr/Lucene operations/circumstances. Sadly we can't replicate it. >>> >>> It doesn't happen often, but often enough that we can't rely on it in >>> production. >>> >>> When it happens, something like the following appears in the logs: >>> >>> ========================================================================== >>> # >>> # A fatal error has been detected by the Java Runtime Environment: >>> # >>> # SIGSEGV (0xb) at pc=0x00007f6c318d0902, pid=16516, tid=139772378892032 >>> # >>> # JRE version: 6.0_18-b18 >>> # Java VM: OpenJDK 64-Bit Server VM (14.0-b16 mixed mode linux-amd64 ) >>> # Derivative: IcedTea6 1.8.9 >>> # Distribution: Debian GNU/Linux 6.0.2 (squeeze), package >>> 6b18-1.8.9-0.1~squeeze1 >>> # Problematic frame: >>> # j >>> org.apache.lucene.search.MultiTermQueryWrapperFilter.getDocIdSet(Lorg/apache/lucene/index/IndexReader$AtomicReaderContext;Lorg/apache/lucene/util/Bits;)Lorg/apache/lucene/search/DocIdSet;+193 >>> # >>> # An error report file with more information is saved as: >>> # /tmp/hs_err_pid16516.log >>> # >>> # If you would like to submit a bug report, please include >>> # instructions how to reproduce the bug and visit: >>> # http://icedtea.classpath.org/bugzilla >>> # >>> ========================================================================== >>> >>> Every time it happens the problematic frame is: >>> >>> Problematic frame: >>> # j >>> org.apache.lucene.search.MultiTermQueryWrapperFilter.getDocIdSet(Lorg/apache/lucene/index/IndexReader$AtomicReaderContext;Lorg/apache/lucene/util/Bits; >>> )Lorg/apache/lucene/search/DocIdSet;+193 >>> >>> And /tmp/hs_err_pid16516.log is attached to this mail. >>> >>> Has anyone seen this before? >>> >>> Please don't hesitate to ask for further specification about our setup. >>> >>> Best regards, >> >> I seem to remember a recent java released fixed seemingly random >> SIGSEGV's causing Solr/Lucene to crash non-deterministicly. >> >> http://lucene.apache.org/solr/#26+October+2011+-+Java+7u1+fixes+index+corruption+and+crash+bugs+in+Apache+Lucene+Core+and+Apache+Solr >> >> Hopefully this will provide you with some answers. If not, please let >> the list know. >> >> justin >> >> -- Lasse Aagren DTU Library --------------------------------------- Technical University of Denmark Technical Information Center of Denmark Anker Engelunds Vej 1 Building 101D 2800 Kgs. Lyngby Direct +45 45257229 Mobile +45 40516542 l...@dtic.dtu.dk http://www.dtic.dtu.dk/
