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From "Mike Matrigali (JIRA)" <j...@apache.org>
Subject [jira] Updated: (DERBY-3219) Group by query with many aggregate columns and case statements fails with: ERROR XSDA7: Restore of a serializable or SQLData object of class , attempted to read more data than was originally stored
Date Tue, 13 May 2008 18:23:55 GMT

     [ https://issues.apache.org/jira/browse/DERBY-3219?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Mike Matrigali updated DERBY-3219:
----------------------------------


Off hand I don't know if current derby code will ever read existing on disk character code
using readExternal.  Definitlely that is
not the normal path.  If so then changing writeExternal to write new data in a format that
is backward compatible readable would 
be ok, though is a lot of overhead for a "0" length string.  I will try to think of a case
where old db's may still have the old format for the empty string and thus would not be fixed
by your writeExternal change.

> Group by query with many aggregate columns and case statements fails with: ERROR XSDA7:
Restore of a serializable or SQLData object of class , attempted to read more data than was
originally stored
> -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
>
>                 Key: DERBY-3219
>                 URL: https://issues.apache.org/jira/browse/DERBY-3219
>             Project: Derby
>          Issue Type: Bug
>          Components: SQL
>    Affects Versions: 10.3.1.4
>            Reporter: Stan Bradbury
>            Assignee: Bryan Pendleton
>         Attachments: pivotView.zip
>
>
> using the attached database (v10.3) - " select * from pivotview " fails with the stack
trace below.  A view (pivotview_ok) created on a subset of the columns in pivotview executes
fine.  Adding one column back into pivotview_ok causes failures most of the time.  See attached
for view definitions.
> 2007-11-21 00:58:49.421 GMT Thread[main,5,main] (XID = 2734422), (SESSIONID = 0), (DATABASE
= pivotview), (DRDAID = null), Failed Statement is: select * from pivotview
> ERROR XSDA7: Restore of a serializable or SQLData object of class , attempted to read
more data than was originally stored
> 	at org.apache.derby.iapi.error.StandardException.newException(Unknown Source)
> 	at org.apache.derby.impl.store.raw.data.StreamFileContainer.fetchNext(Unknown Source)
> 	at org.apache.derby.impl.store.raw.data.StreamFileContainerHandle.fetchNext(Unknown
Source)
> 	at org.apache.derby.impl.store.access.sort.MergeScan.mergeARow(Unknown Source)
> 	at org.apache.derby.impl.store.access.sort.MergeScan.init(Unknown Source)
> 	at org.apache.derby.impl.store.access.sort.MergeSort.openSortScan(Unknown Source)
> 	at org.apache.derby.impl.store.access.RAMTransaction.openSortScan(Unknown Source)
> 	at org.apache.derby.impl.sql.execute.GroupedAggregateResultSet.loadSorter(Unknown Source)
> 	at org.apache.derby.impl.sql.execute.GroupedAggregateResultSet.openCore(Unknown Source)
> 	at org.apache.derby.impl.sql.execute.ProjectRestrictResultSet.openCore(Unknown Source)
> 	at org.apache.derby.impl.sql.execute.BasicNoPutResultSetImpl.open(Unknown Source)
> 	at org.apache.derby.impl.sql.GenericPreparedStatement.execute(Unknown Source)
> 	at org.apache.derby.impl.jdbc.EmbedStatement.executeStatement(Unknown Source)
> 	at org.apache.derby.impl.jdbc.EmbedStatement.execute(Unknown Source)
> 	at org.apache.derby.impl.jdbc.EmbedStatement.execute(Unknown Source)
> 	at org.apache.derby.impl.tools.ij.ij.executeImmediate(Unknown Source)
> 	at org.apache.derby.impl.tools.ij.utilMain.doCatch(Unknown Source)
> 	at org.apache.derby.impl.tools.ij.utilMain.runScriptGuts(Unknown Source)
> 	at org.apache.derby.impl.tools.ij.utilMain.go(Unknown Source)
> 	at org.apache.derby.impl.tools.ij.Main.go(Unknown Source)
> 	at org.apache.derby.impl.tools.ij.Main.mainCore(Unknown Source)
> 	at org.apache.derby.impl.tools.ij.Main14.main(Unknown Source)
> 	at org.apache.derby.tools.ij.main(Unknown Source)
> Caused by: java.io.EOFException
> 	at java.io.DataInputStream.readBoolean(DataInputStream.java:248)
> 	at org.apache.derby.impl.sql.execute.MaxMinAggregator.readExternal(Unknown Source)
> 	at org.apache.derby.iapi.services.io.FormatIdInputStream.readObject(Unknown Source)
> 	at org.apache.derby.iapi.types.UserType.readExternal(Unknown Source)
> 	... 22 more
> ============= begin nested exception, level (1) ===========
> java.io.EOFException
> 	at java.io.DataInputStream.readBoolean(DataInputStream.java:248)
> 	at org.apache.derby.impl.sql.execute.MaxMinAggregator.readExternal(Unknown Source)
> 	at org.apache.derby.iapi.services.io.FormatIdInputStream.readObject(Unknown Source)
> 	at org.apache.derby.iapi.types.UserType.readExternal(Unknown Source)
> 	at org.apache.derby.impl.store.raw.data.StreamFileContainer.fetchNext(Unknown Source)
> 	at org.apache.derby.impl.store.raw.data.StreamFileContainerHandle.fetchNext(Unknown
Source)
> 	at org.apache.derby.impl.store.access.sort.MergeScan.mergeARow(Unknown Source)
> 	at org.apache.derby.impl.store.access.sort.MergeScan.init(Unknown Source)
> 	at org.apache.derby.impl.store.access.sort.MergeSort.openSortScan(Unknown Source)
> 	at org.apache.derby.impl.store.access.RAMTransaction.openSortScan(Unknown Source)
> 	at org.apache.derby.impl.sql.execute.GroupedAggregateResultSet.loadSorter(Unknown Source)
> 	at org.apache.derby.impl.sql.execute.GroupedAggregateResultSet.openCore(Unknown Source)
> 	at org.apache.derby.impl.sql.execute.ProjectRestrictResultSet.openCore(Unknown Source)
> 	at org.apache.derby.impl.sql.execute.BasicNoPutResultSetImpl.open(Unknown Source)
> 	at org.apache.derby.impl.sql.GenericPreparedStatement.execute(Unknown Source)
> 	at org.apache.derby.impl.jdbc.EmbedStatement.executeStatement(Unknown Source)
> 	at org.apache.derby.impl.jdbc.EmbedStatement.execute(Unknown Source)
> 	at org.apache.derby.impl.jdbc.EmbedStatement.execute(Unknown Source)
> 	at org.apache.derby.impl.tools.ij.ij.executeImmediate(Unknown Source)
> 	at org.apache.derby.impl.tools.ij.utilMain.doCatch(Unknown Source)
> 	at org.apache.derby.impl.tools.ij.utilMain.runScriptGuts(Unknown Source)
> 	at org.apache.derby.impl.tools.ij.utilMain.go(Unknown Source)
> 	at org.apache.derby.impl.tools.ij.Main.go(Unknown Source)
> 	at org.apache.derby.impl.tools.ij.Main.mainCore(Unknown Source)
> 	at org.apache.derby.impl.tools.ij.Main14.main(Unknown Source)
> 	at org.apache.derby.tools.ij.main(Unknown Source)
> ============= end nested exception, level (1) ===========
> Cleanup action completed

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