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Posted to derby-dev@db.apache.org by "Kristian Waagan (JIRA)" <ji...@apache.org> on 2011/08/29 10:01:39 UTC

[jira] [Updated] (DERBY-5390) NPE in BasicDatabase.stop in replication slave mode (dd.clearSequenceCaches)

     [ https://issues.apache.org/jira/browse/DERBY-5390?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Kristian Waagan updated DERBY-5390:
-----------------------------------

    Attachment: derby-5390-1a_check_for_null.diff

Attaching patch 1a, which adds a check for null and catches only StandardException instead of Throwable.

> NPE in BasicDatabase.stop in replication slave mode (dd.clearSequenceCaches)
> ----------------------------------------------------------------------------
>
>                 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
>         Attachments: derby-5390-1a_check_for_null.diff
>
>
> 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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