[Mulgara-dev] [Topaz-dev] [Ambra-dev] mulgara crash with java heap errors

Russell Uman ruman at plos.org
Thu Aug 28 18:35:38 UTC 2008


>>  - save the mulgara logs so we can take a closer look
> 
> i've still got the log. will copy to my home on merlin.

the errors begin at 9:48AM after a number of hours with no log activity 
at all.

2008-08-28 09:48:48,967 ERROR MulticastRMICacheManagerPeerProvider> 
Unable to lookup remote cache peer for //192.168.66.19:8111/Repr\
esentationCache. Cause was not due to an IOException or 
NotBoundException which will occur in normal operation: Java heap space 
[poo\
l-1-thread-87 
net.sf.ehcache.distribution.MulticastRMICacheManagerPeerProvider]
2008-08-28 09:48:50,908 ERROR MulticastRMICacheManagerPeerProvider> 
Unable to lookup remote cache peer for //192.168.66.18:8111/Jour\
nals. Cause was not due to an IOException or NotBoundException which 
will occur in normal operation: Java heap space [pool-1-thread-\
88 net.sf.ehcache.distribution.MulticastRMICacheManagerPeerProvider]
2008-08-28 09:49:07,631 WARN  MulgaraTransactionFactory> Rolling back 
over-extended transaction [Write-lock Reaper org.mulgara.resol\
ver.MulgaraTransactionFactory]
2008-08-28 09:49:10,749 WARN  MulgaraTransactionFactory> Rolling back 
over-extended transaction [Write-lock Reaper org.mulgara.resol\
ver.MulgaraTransactionFactory]
2008-08-28 09:49:13,075 ERROR MulgaraXAResourceContext> Failed to create 
transaction [RMI TCP Connection(177473)-192.168.66.18 org.m\
ulgara.resolver.MulgaraXAResourceContext]
org.mulgara.query.MulgaraTransactionException: Interrupted while waiting 
for write lock

there are a number of errors around 4AM, that might correspond to our 
backup (we run an itql backup nightly). i'm pretty sure we're not 
opening a write session for the itql backup, so i'm not sure why we have 
lock-related errors, or if it's related to the crash at 9:48

2008-08-28 04:12:41,562 ERROR AnswerWrapperRemoteAnswer> TuplesException 
thrown [RMI TCP Connection(172432)-192.168.66.17 org.mulgar\
a.server.rmi.AnswerWrapperRemoteAnswer]
org.mulgara.query.TuplesException: Interrupted while waiting to acquire lock





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