[Exist-open] Locking issues

[Ralf J. <ral...@gm...>]

Hi,

after updating to revision 13430, I occasionally see locking errors in the log 
that have me worried. I also just lost my whole DB as it got caught in some 
deadlock or whatever (would only reply to SIGKILL), and left the files in an 
invalid state. I can reproduce the error messages by clearing my data folder 
and starting eXist on a new empty database. The message looks like this:

2010-12-22 14:46:40,054 [WrapperListener_start_runner] WARN  
(MultiReadReentrantLock.java [releaseWrite]:337) - Possible lock problem: a 
thread released a write lock it didn't hold. Either the
 thread was interrupted or it never acquired the lock. 
java.lang.Throwable
        at 
org.exist.storage.lock.MultiReadReentrantLock.releaseWrite(MultiReadReentrantLock.java:337)
        at 
org.exist.storage.lock.MultiReadReentrantLock.release(MultiReadReentrantLock.java:277)
        at org.exist.storage.txn.Txn.releaseAll(Txn.java:62)
        at 
org.exist.storage.txn.TransactionManager.commit(TransactionManager.java:182)
        at org.exist.config.Configurator.save(Configurator.java:836)
        at org.exist.config.Configurator.parse(Configurator.java:735)

The complete log of an initial startup is attached.

Kind regards,
Ralf Jung