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https://issues.apache.org/jira/browse/DERBY-7114?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17850045#comment-17850045
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Sam Hutchins commented on DERBY-7114:
-------------------------------------
We still get this from time to time, with Derby 10.17.1.0 and JDK 21.0.2
> class org.apache.derby.iapi.store.raw.PageKey cannot be cast to class
> org.apache.derby.iapi.store.raw.ContainerKey
> ------------------------------------------------------------------------------------------------------------------
>
> Key: DERBY-7114
> URL: https://issues.apache.org/jira/browse/DERBY-7114
> Project: Derby
> Issue Type: Bug
> Affects Versions: 10.14.2.0
> Environment: Java 8/11, Windows/macOS
> Reporter: Sam Hutchins
> Priority: Major
>
> Hi,
>
> We're using the embedded driver, and we sometimes see this exception in the
> wild:
>
> {code:java}
> java.lang.RuntimeException: java.sql.SQLException: Java exception: 'class
> org.apache.derby.iapi.store.raw.PageKey cannot be cast to class
> org.apache.derby.iapi.store.raw.ContainerKey
> (org.apache.derby.iapi.store.raw.PageKey and
> org.apache.derby.iapi.store.raw.ContainerKey are in unnamed module of loader
> 'app'): java.lang.ClassCastException'.java.lang.RuntimeException:
> java.sql.SQLException: Java exception: 'class
> org.apache.derby.iapi.store.raw.PageKey cannot be cast to class
> org.apache.derby.iapi.store.raw.ContainerKey
> (org.apache.derby.iapi.store.raw.PageKey and
> org.apache.derby.iapi.store.raw.ContainerKey are in unnamed module of loader
> 'app'): java.lang.ClassCastException'. at
> uk.co.screamingfrog.db.utils.DBHelpers.handleSQLException(SourceFile:68)
> ~[dbutils-1.0-SNAPSHOT.jar:?] at
> uk.co.screamingfrog.seospider.db.LinksTableOperations.a(SourceFile:341)
> ~[ScreamingFrogSEOSpider.jar:?] at
> uk.co.screamingfrog.seospider.db.LinksTableOperations.b(SourceFile:215)
> ~[ScreamingFrogSEOSpider.jar:?] at
> uk.co.screamingfrog.seospider.storage.db.k.c(SourceFile:82)
> ~[ScreamingFrogSEOSpider.jar:?] at java.util.HashMap.computeIfAbsent(Unknown
> Source) ~[?:?] at uk.co.screamingfrog.seospider.storage.db.k.b(SourceFile:76)
> ~[ScreamingFrogSEOSpider.jar:?] at
> uk.co.screamingfrog.seospider.storage.db.k.a(SourceFile:41)
> ~[ScreamingFrogSEOSpider.jar:?] at
> uk.co.screamingfrog.seospider.g.f.b(SourceFile:184)
> ~[ScreamingFrogSEOSpider.jar:?] at
> uk.co.screamingfrog.seospider.g.f.a(SourceFile:81)
> ~[ScreamingFrogSEOSpider.jar:?] at
> uk.co.screamingfrog.seospider.g.f.f(SourceFile:56)
> ~[ScreamingFrogSEOSpider.jar:?] at
> uk.co.screamingfrog.seospider.g.m.h_(SourceFile:58)
> ~[ScreamingFrogSEOSpider.jar:?] at
> uk.co.screamingfrog.seospider.h.d.c(SourceFile:22)
> ~[ScreamingFrogSEOSpider.jar:?] at
> uk.co.screamingfrog.seospider.h.e.c(SourceFile:66)
> ~[ScreamingFrogSEOSpider.jar:?] at seo.spider.spider.a.n(SourceFile:114)
> ~[ScreamingFrogSEOSpider.jar:?] at seo.spider.spider.a.k(SourceFile:91)
> ~[ScreamingFrogSEOSpider.jar:?] at
> uk.co.screamingfrog.utils.utils.PriorityRunnable.run(SourceFile:25)
> ~[utils-1.0-SNAPSHOT.jar:?] at
> java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source) ~[?:?] at
> java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) ~[?:?] at
> java.lang.Thread.run(Unknown Source) [?:?]Caused by: java.sql.SQLException:
> Java exception: 'class org.apache.derby.iapi.store.raw.PageKey cannot be cast
> to class org.apache.derby.iapi.store.raw.ContainerKey
> (org.apache.derby.iapi.store.raw.PageKey and
> org.apache.derby.iapi.store.raw.ContainerKey are in unnamed module of loader
> 'app'): java.lang.ClassCastException'. at
> org.apache.derby.impl.jdbc.SQLExceptionFactory.getSQLException(Unknown
> Source) ~[derby-10.14.2.0.jar:?] at
> org.apache.derby.impl.jdbc.SQLExceptionFactory.getSQLException(Unknown
> Source) ~[derby-10.14.2.0.jar:?] at
> org.apache.derby.impl.jdbc.Util.seeNextException(Unknown Source)
> ~[derby-10.14.2.0.jar:?] at
> org.apache.derby.impl.jdbc.Util.javaException(Unknown Source)
> ~[derby-10.14.2.0.jar:?] at
> org.apache.derby.impl.jdbc.TransactionResourceImpl.wrapInSQLException(Unknown
> Source) ~[derby-10.14.2.0.jar:?] at
> org.apache.derby.impl.jdbc.TransactionResourceImpl.handleException(Unknown
> Source) ~[derby-10.14.2.0.jar:?] at
> org.apache.derby.impl.jdbc.EmbedConnection.handleException(Unknown Source)
> ~[derby-10.14.2.0.jar:?] at
> org.apache.derby.impl.jdbc.ConnectionChild.handleException(Unknown Source)
> ~[derby-10.14.2.0.jar:?] at
> org.apache.derby.impl.jdbc.EmbedResultSet.closeOnTransactionError(Unknown
> Source) ~[derby-10.14.2.0.jar:?] at
> org.apache.derby.impl.jdbc.EmbedResultSet.movePosition(Unknown Source)
> ~[derby-10.14.2.0.jar:?] at
> org.apache.derby.impl.jdbc.EmbedResultSet.next(Unknown Source)
> ~[derby-10.14.2.0.jar:?] at
> uk.co.screamingfrog.seospider.db.LinksTableOperations.a(SourceFile:314)
> ~[ScreamingFrogSEOSpider.jar:?] ... 17 moreCaused by:
> org.apache.derby.iapi.error.StandardException: Java exception: 'class
> org.apache.derby.iapi.store.raw.PageKey cannot be cast to class
> org.apache.derby.iapi.store.raw.ContainerKey
> (org.apache.derby.iapi.store.raw.PageKey and
> org.apache.derby.iapi.store.raw.ContainerKey are in unnamed module of loader
> 'app'): java.lang.ClassCastException'. at
> org.apache.derby.iapi.error.StandardException.newException(Unknown Source)
> ~[derby-10.14.2.0.jar:?] at
> org.apache.derby.impl.jdbc.SQLExceptionFactory.wrapArgsForTransportAcrossDRDA(Unknown
> Source) ~[derby-10.14.2.0.jar:?] at
> org.apache.derby.impl.jdbc.SQLExceptionFactory.getSQLException(Unknown
> Source) ~[derby-10.14.2.0.jar:?] at
> org.apache.derby.impl.jdbc.SQLExceptionFactory.getSQLException(Unknown
> Source) ~[derby-10.14.2.0.jar:?] at
> org.apache.derby.impl.jdbc.Util.seeNextException(Unknown Source)
> ~[derby-10.14.2.0.jar:?] at
> org.apache.derby.impl.jdbc.Util.javaException(Unknown Source)
> ~[derby-10.14.2.0.jar:?] at
> org.apache.derby.impl.jdbc.TransactionResourceImpl.wrapInSQLException(Unknown
> Source) ~[derby-10.14.2.0.jar:?] at
> org.apache.derby.impl.jdbc.TransactionResourceImpl.handleException(Unknown
> Source) ~[derby-10.14.2.0.jar:?] at
> org.apache.derby.impl.jdbc.EmbedConnection.handleException(Unknown Source)
> ~[derby-10.14.2.0.jar:?] at
> org.apache.derby.impl.jdbc.ConnectionChild.handleException(Unknown Source)
> ~[derby-10.14.2.0.jar:?] at
> org.apache.derby.impl.jdbc.EmbedResultSet.closeOnTransactionError(Unknown
> Source) ~[derby-10.14.2.0.jar:?] at
> org.apache.derby.impl.jdbc.EmbedResultSet.movePosition(Unknown Source)
> ~[derby-10.14.2.0.jar:?] at
> org.apache.derby.impl.jdbc.EmbedResultSet.next(Unknown Source)
> ~[derby-10.14.2.0.jar:?] at
> uk.co.screamingfrog.seospider.db.LinksTableOperations.a(SourceFile:314)
> ~[ScreamingFrogSEOSpider.jar:?] ... 17 moreCaused by:
> java.lang.ClassCastException: class org.apache.derby.iapi.store.raw.PageKey
> cannot be cast to class org.apache.derby.iapi.store.raw.ContainerKey
> (org.apache.derby.iapi.store.raw.PageKey and
> org.apache.derby.iapi.store.raw.ContainerKey are in unnamed module of loader
> 'app') at
> org.apache.derby.impl.store.raw.data.FileContainer.setIdentity(Unknown
> Source) ~[derby-10.14.2.0.jar:?] at
> org.apache.derby.impl.services.cache.ConcurrentCache.find(Unknown Source)
> ~[derby-10.14.2.0.jar:?] at
> org.apache.derby.impl.store.raw.data.FileContainer.getUserPage(Unknown
> Source) ~[derby-10.14.2.0.jar:?] at
> org.apache.derby.impl.store.raw.data.FileContainer.getPage(Unknown Source)
> ~[derby-10.14.2.0.jar:?] at
> org.apache.derby.impl.store.raw.data.BaseContainerHandle.getPage(Unknown
> Source) ~[derby-10.14.2.0.jar:?] at
> org.apache.derby.impl.store.access.btree.ControlRow.get(Unknown Source)
> ~[derby-10.14.2.0.jar:?] at
> org.apache.derby.impl.store.access.btree.ControlRow.get(Unknown Source)
> ~[derby-10.14.2.0.jar:?] at
> org.apache.derby.impl.store.access.btree.BranchControlRow.getChildPageAtSlot(Unknown
> Source) ~[derby-10.14.2.0.jar:?] at
> org.apache.derby.impl.store.access.btree.BranchControlRow.search(Unknown
> Source) ~[derby-10.14.2.0.jar:?] at
> org.apache.derby.impl.store.access.btree.BranchControlRow.search(Unknown
> Source) ~[derby-10.14.2.0.jar:?] at
> org.apache.derby.impl.store.access.btree.BTreeScan.positionAtStartForForwardScan(Unknown
> Source) ~[derby-10.14.2.0.jar:?] at
> org.apache.derby.impl.store.access.btree.BTreeForwardScan.positionAtStartPosition(Unknown
> Source) ~[derby-10.14.2.0.jar:?] at
> org.apache.derby.impl.store.access.btree.BTreeForwardScan.fetchRows(Unknown
> Source) ~[derby-10.14.2.0.jar:?] at
> org.apache.derby.impl.store.access.btree.BTreeScan.fetchNext(Unknown Source)
> ~[derby-10.14.2.0.jar:?] at
> org.apache.derby.impl.sql.execute.TableScanResultSet.loopControl(Unknown
> Source) ~[derby-10.14.2.0.jar:?] at
> org.apache.derby.impl.sql.execute.TableScanResultSet.getNextRowCore(Unknown
> Source) ~[derby-10.14.2.0.jar:?] at
> org.apache.derby.impl.sql.execute.IndexRowToBaseRowResultSet.getNextRowCore(Unknown
> Source) ~[derby-10.14.2.0.jar:?] at
> org.apache.derby.impl.sql.execute.NestedLoopJoinResultSet.getNextRowCore(Unknown
> Source) ~[derby-10.14.2.0.jar:?] at
> org.apache.derby.impl.sql.execute.BasicNoPutResultSetImpl.getNextRow(Unknown
> Source) ~[derby-10.14.2.0.jar:?] at
> org.apache.derby.impl.jdbc.EmbedResultSet.movePosition(Unknown Source)
> ~[derby-10.14.2.0.jar:?] at
> org.apache.derby.impl.jdbc.EmbedResultSet.next(Unknown Source)
> ~[derby-10.14.2.0.jar:?] at
> uk.co.screamingfrog.seospider.db.LinksTableOperations.a(SourceFile:314)
> ~[ScreamingFrogSEOSpider.jar:?] ... 17 more {code}
>
> We've seen it happen in 2 separate products, and with multiple paths in. I'm
> not sure how to reproduce it though, I'm afraid.
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