Symptoms
When synchronising a directory from a user directory, it fails, with an error like the below:
2013-02-21 09:59:32,590 ERROR [scheduler_Worker-2] [atlassian.crowd.directory.DbCachingDirectoryPoller] pollChanges Error occurred while refreshing the cache for directory [ 98307 ].
org.springframework.dao.DataIntegrityViolationException: Hibernate operation: could not insert: [com.atlassian.crowd.embedded.hibernate2.HibernateMembership#295380]; SQL []; ERROR: duplicate key value violates unique constraint "cwd_unique_user_membership"
Detail: Key (parent_id, child_user_id)=(163849, 229382) already exists.; nested exception is org.postgresql.util.PSQLException: ERROR: duplicate key value violates unique constraint "cwd_unique_user_membership"
Detail: Key (parent_id, child_user_id)=(163849, 229382) already exists.
at org.springframework.jdbc.support.SQLStateSQLExceptionTranslator.doTranslate(SQLStateSQLExceptionTranslator.java:100)
at org.springframework.jdbc.support.AbstractFallbackSQLExceptionTranslator.translate(AbstractFallbackSQLExceptionTranslator.java:72)
at org.springframework.orm.hibernate.HibernateTransactionManager.convertJdbcAccessException(HibernateTransactionManager.java:619)
at org.springframework.orm.hibernate.HibernateTransactionManager.convertHibernateAccessException(HibernateTransactionManager.java:605)
at org.springframework.orm.hibernate.HibernateTransactionManager.doCommit(HibernateTransactionManager.java:518)
at org.springframework.transaction.support.AbstractPlatformTransactionManager.processCommit(AbstractPlatformTransactionManager.java:732)
at org.springframework.transaction.support.AbstractPlatformTransactionManager.commit(AbstractPlatformTransactionManager.java:701)
at org.springframework.transaction.interceptor.TransactionAspectSupport.commitTransactionAfterReturning(TransactionAspectSupport.java:321)
at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:116)
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)
at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:204)
at com.atlassian.crowd.directory.$Proxy1476.addUserToGroup(Unknown Source)
at com.atlassian.crowd.directory.DirectoryCacheImplUsingChangeOperations.addUserToGroup(DirectoryCacheImplUsingChangeOperations.java:187)
at com.atlassian.crowd.directory.ldap.cache.EventTokenChangedCacheRefresher.synchroniseChanges(EventTokenChangedCacheRefresher.java:115)
at com.atlassian.crowd.directory.DbCachingRemoteDirectory.synchroniseCache(DbCachingRemoteDirectory.java:610)
at com.atlassian.crowd.manager.directory.DirectorySynchroniserImpl.synchronise(DirectorySynchroniserImpl.java:63)
at com.atlassian.crowd.directory.DbCachingDirectoryPoller.pollChanges(DbCachingDirectoryPoller.java:50)
at com.atlassian.crowd.manager.directory.monitor.poller.DirectoryPollerJobBean.executeInternal(DirectoryPollerJobBean.java:29)
at org.springframework.scheduling.quartz.QuartzJobBean.execute(QuartzJobBean.java:86)
at org.quartz.core.JobRunShell.run(JobRunShell.java:199)
at com.atlassian.confluence.schedule.quartz.ConfluenceQuartzThreadPool$1.run(ConfluenceQuartzThreadPool.java:20)
at org.quartz.simpl.SimpleThreadPool$WorkerThread.run(SimpleThreadPool.java:549)
Caused by: org.postgresql.util.PSQLException: ERROR: duplicate key value violates unique constraint "cwd_unique_user_membership"
Detail: Key (parent_id, child_user_id)=(163849, 229382) already exists.
at org.postgresql.core.v3.QueryExecutorImpl.receiveErrorResponse(QueryExecutorImpl.java:2102)
at org.postgresql.core.v3.QueryExecutorImpl.processResults(QueryExecutorImpl.java:1835)
at org.postgresql.core.v3.QueryExecutorImpl.execute(QueryExecutorImpl.java:257)
at org.postgresql.jdbc2.AbstractJdbc2Statement.execute(AbstractJdbc2Statement.java:500)
at org.postgresql.jdbc2.AbstractJdbc2Statement.executeWithFlags(AbstractJdbc2Statement.java:388)
at org.postgresql.jdbc2.AbstractJdbc2Statement.executeUpdate(AbstractJdbc2Statement.java:334)
at com.mchange.v2.c3p0.impl.NewProxyPreparedStatement.executeUpdate(NewProxyPreparedStatement.java:105)
at net.sf.hibernate.impl.NonBatchingBatcher.addToBatch(NonBatchingBatcher.java:22)
at net.sf.hibernate.persister.EntityPersister.insert(EntityPersister.java:462)
at net.sf.hibernate.persister.EntityPersister.insert(EntityPersister.java:436)
at net.sf.hibernate.impl.ScheduledInsertion.execute(ScheduledInsertion.java:37)
at net.sf.hibernate.impl.SessionImpl.execute(SessionImpl.java:2464)
at net.sf.hibernate.impl.SessionImpl.executeAll(SessionImpl.java:2450)
at net.sf.hibernate.impl.SessionImpl.execute(SessionImpl.java:2407)
at net.sf.hibernate.impl.SessionImpl.flush(SessionImpl.java:2276)
at net.sf.hibernate.transaction.JDBCTransaction.commit(JDBCTransaction.java:61)
at org.springframework.orm.hibernate.HibernateTransactionManager.doCommit(HibernateTransactionManager.java:510)
... 17 more
Cause
A group membership is being synchronised from the remote directory which already exists, and Confluence is attempting to add this. There are a few reasons why the remote directory would synchronise such memberships, including but not limited to the following known bugs:
CONF-28190 |
Adding a user to a group locally on Confluence when using a read/write remote Crowd or JIRA directory |
CWD-3147 |
If a user exists in two directories in an application, and is added to a group in one directory that it was already in the other, clients get duplicate key errors |
Workaround
Flushing the cache of the directory will stop the error from happening, and cause the directory to synchronise fully, until the next time a duplicate group membership is sent from the remote directory. The simplest way of forcing this is:
- Disable the directory
- Enable the directory
For the specific causes there may be workarounds in the linked bug tickets.
Bug
Medium
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