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Harshvardhan Gupta commented on DERBY-3219: ------------------------------------------- While examining the failed test cases as part of patch for DERBY-6940,I get this error because of exactly the same root cause. i.e value I am trying to store is a SQLVarChar whose value is "" (that is, a string of length 0). ] To reproduce the error with the patch attached with DERBY-6940, run ant -Dderby.junit.testclass=org.apache.derbyTesting.functionTests.tests.lang.OrderByAndSortAvoidance junit-single Since I am trying to filter the min and max values from the database, a string of length 0 turns out to be min value for the test cases in OrderByAndSortAvoidance. > 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 > Fix For: 10.5.1.1 > > Attachments: maxminPatch.diff, patchWithTest.diff, pivotView.zip, > repro.java, sanityTest.diff, ten_four_patch.diff, 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 -- This message was sent by Atlassian JIRA (v6.4.14#64029)