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From "Bryan Pendleton (JIRA)" <j...@apache.org>
Subject [jira] Commented: (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 Wed, 21 May 2008 14:35:55 GMT

    [ https://issues.apache.org/jira/browse/DERBY-3219?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12598668#action_12598668
] 

Bryan Pendleton commented on DERBY-3219:
----------------------------------------

Thanks Thomas and Knut. I hear what you are saying about -Xmx and -Xms.
And, if I run the repro script with:

   java -Xms1024m -Xmx1024m repro

then the problem does NOT reproduce for me, either. So it's completely
clear that the repro program is sensitive to the memory configuration.

What I haven't yet managed to do is to make the program dynamically adjust
the size of the test case in such a way that it reliably reproduces the
problem, regardless of the memory settings.

But I think I'm closer now, so I'll keep fiddling with the test program 
and see if I can solve that problem.

> 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: maxminPatch.diff, patchWithTest.diff, pivotView.zip, repro.java,
testWithMemControls.diff
>
>
> 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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