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ID |
Category |
Severity |
Reproducibility |
Date Submitted |
Last Update |
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0005647 |
[Resin] |
crash |
sometimes |
02-03-14 07:15 |
05-05-14 10:26 |
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Reporter |
mate |
View Status |
public |
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Assigned To |
ferg |
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Priority |
normal |
Resolution |
fixed |
Platform |
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Status |
closed |
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OS |
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Projection |
none |
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OS Version |
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ETA |
none |
Fixed in Version |
4.0.40 |
Product Version |
4.0.37 |
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Product Build |
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Summary |
0005647: ConnectionPool can cause memory leaks |
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Description |
com.caucho.env.dbpool.ConnectionPool + suspended transactions can cause classloader leaks and eventually OutOfMemoryError: PermGen space.
Reference chain is as follows: Thread -> ThreadLocalMap -[Entry for key com.caucho.transaction.TransactionManagerImpl._threadTransaction]-> TransactionImpl -> UserTransactionSuspendState -> ManagedPoolItem -> ConnectionPool -> ClassLoader
Suggested ways to fix this is to set _suspendState to null in TransactionImpl.resume()
Alternative solutions would include unset ConnectionPool._classLoader on all pools of an application when undeploying and calling remove on TransactionManagerImpl._threadTransaction before returning Thread to thread pool (will only cover pooled threads). |
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