JIRA Agile lexorank rebalancing throughs 'The OpTimer has been re-used' error

2016-01-22 13:26:20,070 Finalizer ERROR      [jdbc.interceptors.connection.SafeDelegatingSqlConnectionInterceptor] Unexpected exception from SQL connection interceptor callback: onConnectionReplaced([DelegatingConnectionImpl[connectionPoolInfo=ConnectionPoolInfo{maxSize=20, minSize=20, initialSize=null, maxIdle=20, maxWait=30000, sleepTime=300000, lifeTime=600000, deadLockMaxWait=600000, deadLockRetryWait=10000, validationQuery='select 1', minEvictableTimeMillis=60000, timeBetweenEvictionRunsMillis=10000, poolPreparedStatements=null, testOnBorrow=false, testOnReturn=null, testWhileIdle=true, maxOpenPreparedStatements=null, numTestsPerEvictionRun=null, removeAbandonedTimeout=300, validationQueryTimeout=3, defaultCatalog=null},sqlConnectionInterceptor=org.ofbiz.core.entity.jdbc.interceptors.connection.SafeDelegatingSqlConnectionInterceptor@2b1deea0], ConnectionPoolStateImpl[timeToBorrowNanos=0,borrowCount=-57202,connectionPoolInfo=ConnectionPoolInfo{maxSize=20, minSize=20, initialSize=null, maxIdle=20, maxWait=30000, sleepTime=300000, lifeTime=600000, deadLockMaxWait=600000, deadLockRetryWait=10000, validationQuery='select 1', minEvictableTimeMillis=60000, timeBetweenEvictionRunsMillis=10000, poolPreparedStatements=null, testOnBorrow=false, testOnReturn=null, testWhileIdle=true, maxOpenPreparedStatements=null, numTestsPerEvictionRun=null, removeAbandonedTimeout=300, validationQueryTimeout=3, defaultCatalog=null}]])
java.lang.IllegalStateException: The OpTimer has been re-used.  end() can only be called once!
	at com.atlassian.instrumentation.operations.SimpleOpTimer.end(SimpleOpTimer.java:142)
	at com.atlassian.instrumentation.operations.SimpleOpTimer.end(SimpleOpTimer.java:99)
	at com.atlassian.instrumentation.operations.SimpleOpTimer.end(SimpleOpTimer.java:117)
	at com.atlassian.jira.ofbiz.InstrumentedSQLInterceptor.onConnectionReplaced(InstrumentedSQLInterceptor.java:39)
	at com.atlassian.jira.ofbiz.ChainedSQLInterceptor.onConnectionReplaced(ChainedSQLInterceptor.java:75)
	at org.ofbiz.core.entity.jdbc.interceptors.connection.SafeDelegatingSqlConnectionInterceptor.onConnectionReplaced(SafeDelegatingSqlConnectionInterceptor.java:47)
	at org.ofbiz.core.entity.jdbc.interceptors.connection.ConnectionTracker$DelegatingConnectionImpl.close(ConnectionTracker.java:99)
	at net.java.ao.DelegateConnectionHandler.close(DelegateConnectionHandler.java:79)
	at net.java.ao.DelegateConnectionHandler.invoke(DelegateConnectionHandler.java:54)
	at com.sun.proxy.$Proxy4684.close(Unknown Source)
	at net.java.ao.Common.closeQuietly(Common.java:578)
	at com.atlassian.greenhopper.manager.lexorank.SqlUpdateStatement.close(SqlUpdateStatement.java:56)
	at com.atlassian.greenhopper.manager.lexorank.SqlUpdateStatement.finalize(SqlUpdateStatement.java:67)
	at java.lang.System$2.invokeFinalize(System.java:1270)
	at java.lang.ref.Finalizer.runFinalizer(Finalizer.java:98)
	at java.lang.ref.Finalizer.access$100(Finalizer.java:34)
	at java.lang.ref.Finalizer$FinalizerThread.run(Finalizer.java:210)