NPE in BasicDatabase.stop in replication slave mode (dd.clearSequenceCaches)
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Key: DERBY-5390
URL: https://issues.apache.org/jira/browse/DERBY-5390
Project: Derby
Issue Type: Bug
Affects Versions: 10.8.1.6, 10.9.0.0
Reporter: Kristian Waagan
Assignee: Kristian Waagan
Priority: Minor
To reproduce, set up a replication pair and then stop the master (I used
"stopMaster=true").
>From derby.log on the slave:
Replication slave role was stopped for database 'replicDB'.
java.lang.NullPointerException
at org.apache.derby.impl.db.BasicDatabase.stop(Unknown Source)
at org.apache.derby.impl.db.SlaveDatabase.stop(SlaveDatabase.java:167)
at
org.apache.derby.impl.services.monitor.TopService.stop(TopService.java:443)
at
org.apache.derby.impl.services.monitor.TopService.shutdown(TopService.java:394)
at
org.apache.derby.impl.services.monitor.BaseMonitor.shutdown(BaseMonitor.java:229)
at
org.apache.derby.impl.db.DatabaseContextImpl.cleanupOnError(DatabaseContextImpl.java:77)
at
org.apache.derby.iapi.services.context.ContextManager.cleanupOnError(ContextManager.java:343)
at
org.apache.derby.impl.jdbc.TransactionResourceImpl.cleanupOnError(TransactionResourceImpl.java:437)
at
org.apache.derby.impl.jdbc.TransactionResourceImpl.handleException(TransactionResourceImpl.java:339)
at
org.apache.derby.impl.jdbc.EmbedConnection.handleException(EmbedConnection.java:2290)
at
org.apache.derby.impl.jdbc.EmbedConnection.internalStopReplicationSlave(EmbedConnection.java:1034)
at
org.apache.derby.impl.jdbc.EmbedConnection.<init>(EmbedConnection.java:353)
at
org.apache.derby.impl.jdbc.EmbedConnection30.<init>(EmbedConnection30.java:73)
at
org.apache.derby.impl.jdbc.EmbedConnection40.<init>(EmbedConnection40.java:51)
at
org.apache.derby.jdbc.Driver40.getNewEmbedConnection(Driver40.java:70)
at org.apache.derby.jdbc.InternalDriver.connect(InternalDriver.java:248)
at
org.apache.derby.jdbc.AutoloadedDriver.connect(AutoloadedDriver.java:144)
at
org.apache.derby.impl.db.SlaveDatabase.handleShutdown(SlaveDatabase.java:428)
at
org.apache.derby.impl.db.SlaveDatabase.access$200(SlaveDatabase.java:72)
at
org.apache.derby.impl.db.SlaveDatabase$SlaveDatabaseBootThread.run(SlaveDatabase.java:328)
at java.lang.Thread.run(Thread.java:722)
The reason is that there is no data dictionary available when the database is
in replication slave mode.
Note that the exception is caught and simply printed to derby.log.
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