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https://issues.apache.org/jira/browse/DERBY-6110?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Rick Hillegas updated DERBY-6110:
---------------------------------
Urgency: Normal
Labels: derby_triage10_11 (was: )
> BrokeredConnection.isClosed() may open a new connection
> -------------------------------------------------------
>
> Key: DERBY-6110
> URL: https://issues.apache.org/jira/browse/DERBY-6110
> Project: Derby
> Issue Type: Bug
> Components: JDBC
> Affects Versions: 10.8.2.2
> Reporter: Knut Anders Hatlen
> Labels: derby_triage10_11
>
> I noticed this odd-looking stack trace in the thread dump provided in
> DERBY-5632:
> "DRDAConnThread_22" prio=3 tid=0x0000000101b81800 nid=0x31 waiting for
> monitor entry [0xfffffffd236fe000]
> java.lang.Thread.State: BLOCKED (on object monitor)
> at
> org.apache.derby.impl.store.access.RAMAccessManager.conglomCacheFind(Unknown
> Source)
> - waiting to lock <0xfffffffd3a7fcc68> (a
> org.apache.derby.impl.services.cache.ConcurrentCache)
> at
> org.apache.derby.impl.store.access.RAMTransaction.findExistingConglomerate(Unknown
> Source)
> at
> org.apache.derby.impl.store.access.RAMTransaction.openConglomerate(Unknown
> Source)
> at
> org.apache.derby.impl.sql.catalog.DataDictionaryImpl.getDescriptorViaIndexMinion(Unknown
> Source)
> at
> org.apache.derby.impl.sql.catalog.DataDictionaryImpl.getDescriptorViaIndex(Unknown
> Source)
> at
> org.apache.derby.impl.sql.catalog.DataDictionaryImpl.locateSchemaRow(Unknown
> Source)
> at
> org.apache.derby.impl.sql.catalog.DataDictionaryImpl.getSchemaDescriptor(Unknown
> Source)
> at
> org.apache.derby.impl.sql.conn.GenericLanguageConnectionContext.initDefaultSchemaDescriptor(Unknown
> Source)
> at
> org.apache.derby.impl.sql.conn.GenericLanguageConnectionContext.initialize(Unknown
> Source)
> at org.apache.derby.impl.db.BasicDatabase.setupConnection(Unknown
> Source)
> at
> org.apache.derby.impl.jdbc.TransactionResourceImpl.startTransaction(Unknown
> Source)
> at
> org.apache.derby.impl.jdbc.EmbedConnection.checkUserIsNotARole(Unknown Source)
> at
> org.apache.derby.impl.jdbc.EmbedConnection.checkUserCredentials(Unknown
> Source)
> at org.apache.derby.impl.jdbc.EmbedConnection.<init>(Unknown Source)
> at org.apache.derby.impl.jdbc.EmbedConnection30.<init>(Unknown Source)
> at org.apache.derby.impl.jdbc.EmbedConnection40.<init>(Unknown Source)
> at org.apache.derby.jdbc.Driver40.getNewEmbedConnection(Unknown Source)
> at org.apache.derby.jdbc.InternalDriver.connect(Unknown Source)
> at org.apache.derby.jdbc.EmbeddedDataSource.getConnection(Unknown
> Source)
> at
> org.apache.derby.jdbc.EmbedPooledConnection.openRealConnection(Unknown Source)
> at org.apache.derby.jdbc.EmbedXAConnection.getRealConnection(Unknown
> Source)
> at
> org.apache.derby.iapi.jdbc.BrokeredConnection.getRealConnection(Unknown
> Source)
> at org.apache.derby.iapi.jdbc.BrokeredConnection.isClosed(Unknown
> Source)
> at
> org.apache.derby.impl.drda.PiggyBackedSessionData.getInstance(Unknown Source)
> at
> org.apache.derby.impl.drda.Database.getPiggyBackedSessionData(Unknown Source)
> at org.apache.derby.impl.drda.DRDAConnThread.writePBSD(Unknown Source)
> at org.apache.derby.impl.drda.DRDAConnThread.processCommands(Unknown
> Source)
> at org.apache.derby.impl.drda.DRDAConnThread.run(Unknown Source)
> It looks as if BrokeredConnection.isClosed() fails to find a usable physical
> connection and then tries to open a new one. Presumably, when this happens,
> isClosed() will return false. It sounds more reasonable to return true in
> such circumstances.
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