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From Aeham Abushwashi <aeham.abushwa...@exonar.com>
Subject Re: Zookeeper configured MCF not working in production mode
Date Fri, 24 Oct 2014 15:42:24 GMT
All relevant patches from 1.7.x have been applied (to our internal 1.6.1
branch), including changes to files bundled in the same revisions as
ZooKeeperConnection.java.
Crawls run without error, however, if I stop an agent whilst some crawls
are still active, I get the following exception intermettintly in the
output log of some nodes.


‚Äč:FATAL 2014-10-23 23:24:40,268 (Worker thread '87') - Error tossed: Can't
release lock we don't hold
-java.lang.IllegalStateException: Can't release lock we don't hold
-       at
org.apache.manifoldcf.core.lockmanager.ZooKeeperConnection.releaseLock(ZooKeeperConnection.java:787)
-       at
org.apache.manifoldcf.core.lockmanager.ZooKeeperLockObject.clearLock(ZooKeeperLockObject.java:218)
-       at
org.apache.manifoldcf.core.lockmanager.ZooKeeperLockObject.clearGlobalReadLockNoWait(ZooKeeperLockObject.java:212)
-       at
org.apache.manifoldcf.core.lockmanager.LockObject.clearGlobalReadLock(LockObject.java:395)
-       at
org.apache.manifoldcf.core.lockmanager.LockObject.leaveReadLock(LockObject.java:376)
-       at
org.apache.manifoldcf.core.lockmanager.LockGate.leaveReadLock(LockGate.java:289)
-       at
org.apache.manifoldcf.core.lockmanager.BaseLockManager.leaveRead(BaseLockManager.java:1377)
-       at
org.apache.manifoldcf.core.lockmanager.BaseLockManager.leave(BaseLockManager.java:1822)
-       at
org.apache.manifoldcf.core.lockmanager.BaseLockManager.leaveLocks(BaseLockManager.java:829)
-       at
org.apache.manifoldcf.core.cachemanager.CacheManager.leaveCache(CacheManager.java:667)
-       at
org.apache.manifoldcf.core.cachemanager.CacheManager.findObjectsAndExecute(CacheManager.java:179)
-       at
org.apache.manifoldcf.agents.outputconnection.OutputConnectionManager.loadMultiple(OutputConnectionManager.java:256)
-       at
org.apache.manifoldcf.agents.outputconnection.OutputConnectionManager.load(OutputConnectionManager.java:233)
-       at
org.apache.manifoldcf.agents.incrementalingest.IncrementalIngester.getOutputDescription(IncrementalIngester.java:311)
-       at
org.apache.manifoldcf.crawler.system.WorkerThread.run(WorkerThread.java:311)


I don't expect many people to have my exact configuration, but was
wondering if anyone on 1.7.x is seeing the same problem.

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