[CONNECTORS-1447] Crash Agents A and B - can't release lock we don't hold

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: ManifoldCF 2.7
• Fix Version/s: ManifoldCF 2.8
• Component/s: Framework crawler agent

Environment

• Debian : Jessie
• PostgreSQL : 9.6

• Assignee: Karl Wright
• Reporter: Maxence SAUNIER
• Created: 04/Aug/17 07:51
• Updated: 04/Aug/17 09:54
• Resolved: 04/Aug/17 09:54

Description

Hello,

manifoldcf.log

ERROR 2017-08-04 09:28:25,794 (Set priority thread) - Set priority thread aborting and restarting due to database connection reset: Database exception: SQLException doing query (08006): Une erreur d'entrée/sortie a eu lieu lors d'envoi vers le serveur.
org.apache.manifoldcf.core.interfaces.ManifoldCFException: Database exception: SQLException doing query (08006): Une erreur d'entrée/sortie a eu lieu lors d'envoi vers le serveur.
at org.apache.manifoldcf.core.database.Database$ExecuteQueryThread.finishUp(Database.java:715)
at org.apache.manifoldcf.core.database.Database.executeViaThread(Database.java:741)
at org.apache.manifoldcf.core.database.DBInterfacePostgreSQL.rollbackCurrentTransaction(DBInterfacePostgreSQL.java:1292)
at org.apache.manifoldcf.core.database.Database.endTransaction(Database.java:368)
at org.apache.manifoldcf.core.database.DBInterfacePostgreSQL.endTransaction(DBInterfacePostgreSQL.java:1236)
at org.apache.manifoldcf.crawler.jobs.JobManager.writeDocumentPriorities(JobManager.java:2418)
at org.apache.manifoldcf.crawler.system.ManifoldCF.writeDocumentPriorities(ManifoldCF.java:1259)
at org.apache.manifoldcf.crawler.system.SetPriorityThread.run(SetPriorityThread.java:141)
Caused by: org.postgresql.util.PSQLException: Une erreur d'entrée/sortie a eu lieu lors d'envoi vers le serveur.
at org.postgresql.core.v3.QueryExecutorImpl.execute(QueryExecutorImpl.java:283)
at org.postgresql.jdbc2.AbstractJdbc2Statement.execute(AbstractJdbc2Statement.java:500)
at org.postgresql.jdbc2.AbstractJdbc2Statement.executeWithFlags(AbstractJdbc2Statement.java:374)
at org.postgresql.jdbc2.AbstractJdbc2Statement.execute(AbstractJdbc2Statement.java:366)
at org.apache.manifoldcf.core.database.Database.execute(Database.java:876)
at org.apache.manifoldcf.core.database.Database$ExecuteQueryThread.run(Database.java:696)
Caused by: java.io.IOException: Unexpected packet type: 114
at org.postgresql.core.v3.QueryExecutorImpl.processResults(QueryExecutorImpl.java:1981)
at org.postgresql.core.v3.QueryExecutorImpl.execute(QueryExecutorImpl.java:257)
... 5 more
FATAL 2017-08-04 09:28:25,855 (Agents idle cleanup thread) - 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:815)
at org.apache.manifoldcf.core.lockmanager.ZooKeeperLockObject.clearLock(ZooKeeperLockObject.java:218)
at org.apache.manifoldcf.core.lockmanager.ZooKeeperLockObject.clearGlobalWriteLockNoWait(ZooKeeperLockObject.java:100)
at org.apache.manifoldcf.core.lockmanager.LockObject.clearGlobalWriteLock(LockObject.java:160)
at org.apache.manifoldcf.core.lockmanager.LockObject.leaveWriteLock(LockObject.java:141)
at org.apache.manifoldcf.core.lockmanager.LockGate.leaveWriteLock(LockGate.java:205)
at org.apache.manifoldcf.core.lockmanager.BaseLockManager.leaveWrite(BaseLockManager.java:1224)
at org.apache.manifoldcf.core.lockmanager.BaseLockManager.leaveWriteLock(BaseLockManager.java:771)
at org.apache.manifoldcf.core.connectorpool.ConnectorPool$Pool.pollAll(ConnectorPool.java:670)
at org.apache.manifoldcf.core.connectorpool.ConnectorPool.pollAllConnectors(ConnectorPool.java:338)
at org.apache.manifoldcf.agents.transformationconnectorpool.TransformationConnectorPool.pollAllConnectors(TransformationConnectorPool.java:121)
at org.apache.manifoldcf.agents.system.IdleCleanupThread.run(IdleCleanupThread.java:91)