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From "Kristian Waagan (JIRA)" <j...@apache.org>
Subject [jira] Resolved: (DERBY-3645) Insert into selecting BLOB column twice leads to SQLException: Restore of a serializable or SQLData object of class error selecting from the table
Date Thu, 11 Feb 2010 11:56:29 GMT

     [ https://issues.apache.org/jira/browse/DERBY-3645?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Kristian Waagan resolved DERBY-3645.
------------------------------------

       Resolution: Fixed
    Fix Version/s: 10.6.0.0

Fixed by the combination of DERBY-4477 and DERBY-4520.
Verified against trunk revision 980933, but it would be nice if the reporter verified the
fix as well.

I do not plan to back-port the fix(es) due to the rather signficant changes involved, but
it may be technically possible.

> Insert into selecting BLOB column twice leads to SQLException: Restore of a serializable
or SQLData object of class error selecting from the table
> --------------------------------------------------------------------------------------------------------------------------------------------------
>
>                 Key: DERBY-3645
>                 URL: https://issues.apache.org/jira/browse/DERBY-3645
>             Project: Derby
>          Issue Type: Bug
>          Components: SQL
>    Affects Versions: 10.3.3.0, 10.4.2.0, 10.5.1.1
>            Reporter: Kathey Marsden
>             Fix For: 10.6.0.0
>
>         Attachments: DoubleInsertInto.java
>
>
> The following code which inserts into a table by selecting a blob column twice from another
table, causes SQLException: Restore of a serializable or SQLData object of class error selecting
from the table. See attached program DoubleInsertInto for full repro.  Stack trace is below.
 Verified back to 10.3 but probably goes back further.
>         s.executeUpdate("CREATE TABLE T_MAIN(" +
>                 "ID INT  GENERATED ALWAYS AS IDENTITY PRIMARY KEY, " +
>                 "V BLOB(590473235) )");
>         String ins1 = "INSERT INTO T_MAIN(V) VALUES (?)";
>         
>         PreparedStatement ps;
>         ps = c.prepareStatement(ins1);
> 	byte[] bytes = new byte[35000];
> 	for (int i = 0; i < 35000; i++)
> 	    bytes[i] = (byte) i ;
> 	ps.setBytes(1, bytes);
>         ps.executeUpdate();
>         ps.close();
> 	s.executeUpdate("CREATE TABLE T_COPY ( V1 BLOB(2M), V2 BLOB(2M))");
> 	Statement stmt = c.createStatement();
> 	stmt.executeUpdate("INSERT INTO T_COPY SELECT  V, V FROM T_MAIN");
> 	ResultSet rs = stmt.executeQuery("SELECT * FROM T_COPY");
> 	rs.next();
> 	String v1 = rs.getString(1);
> 	String v2 = rs.getString(2);
> 	System.out.println("v1:" + v1);
> 	System.out.println("v2:" + v2);
> 	System.out.println("I am done");
> Exception in thread "main" java.sql.SQLException: Restore of a serializable or SQLData
object of class , attempted to re
> ad more data than was originally stored
>         at org.apache.derby.impl.jdbc.SQLExceptionFactory40.getSQLException(SQLExceptionFactory40.java:95)
>         at org.apache.derby.impl.jdbc.Util.newEmbedSQLException(Util.java:87)
>         at org.apache.derby.impl.jdbc.Util.seeNextException(Util.java:223)
>         at org.apache.derby.impl.jdbc.TransactionResourceImpl.wrapInSQLException(TransactionResourceImpl.java:398)
>         at org.apache.derby.impl.jdbc.TransactionResourceImpl.handleException(TransactionResourceImpl.java:346)
>         at org.apache.derby.impl.jdbc.EmbedConnection.handleException(EmbedConnection.java:2125)
>         at org.apache.derby.impl.jdbc.ConnectionChild.handleException(ConnectionChild.java:81)
>         at org.apache.derby.impl.jdbc.EmbedResultSet.closeOnTransactionError(EmbedResultSet.java:4320)
>         at org.apache.derby.impl.jdbc.EmbedResultSet.movePosition(EmbedResultSet.java:463)
>         at org.apache.derby.impl.jdbc.EmbedResultSet.next(EmbedResultSet.java:367)
>         at DoubleInsertInto.main(DoubleInsertInto.java:47)
> Caused by: java.sql.SQLException: Restore of a serializable or SQLData object of class
, attempted to read more data tha
> n was originally stored
>         at org.apache.derby.impl.jdbc.SQLExceptionFactory.getSQLException(SQLExceptionFactory.java:45)
>         at org.apache.derby.impl.jdbc.SQLExceptionFactory40.wrapArgsForTransportAcrossDRDA(SQLExceptionFactory40.java:11
> 9)
>         at org.apache.derby.impl.jdbc.SQLExceptionFactory40.getSQLException(SQLExceptionFactory40.java:70)
>         ... 10 more
> Caused by: java.sql.SQLException: Java exception: ': java.io.EOFException'.
>         at org.apache.derby.impl.jdbc.SQLExceptionFactory.getSQLException(SQLExceptionFactory.java:45)
>         at org.apache.derby.impl.jdbc.SQLExceptionFactory40.wrapArgsForTransportAcrossDRDA(SQLExceptionFactory40.java:11
> 9)
>         at org.apache.derby.impl.jdbc.SQLExceptionFactory40.getSQLException(SQLExceptionFactory40.java:70)
>         at org.apache.derby.impl.jdbc.Util.newEmbedSQLException(Util.java:87)
>         at org.apache.derby.impl.jdbc.Util.javaException(Util.java:244)
>         at org.apache.derby.impl.jdbc.TransactionResourceImpl.wrapInSQLException(TransactionResourceImpl.java:403)
>         ... 8 more
> Caused by: java.io.EOFException
>         at org.apache.derby.iapi.types.SQLBinary.readBinaryLength(SQLBinary.java:350)
>         at org.apache.derby.iapi.types.SQLBinary.readExternalFromArray(SQLBinary.java:328)
>         at org.apache.derby.impl.store.raw.data.StoredPage.readRecordFromArray(StoredPage.java:5568)
>         at org.apache.derby.impl.store.raw.data.StoredPage.restoreRecordFromSlot(StoredPage.java:1497)
>         at org.apache.derby.impl.store.raw.data.BasePage.fetchFromSlot(BasePage.java:459)
>         at org.apache.derby.impl.store.access.conglomerate.GenericScanController.fetchRows(GenericScanController.java:75
> 9)
>         at org.apache.derby.impl.store.access.heap.HeapScan.fetchNextGroup(HeapScan.java:324)
>         at org.apache.derby.impl.sql.execute.BulkTableScanResultSet.reloadArray(BulkTableScanResultSet.java:327)
>         at org.apache.derby.impl.sql.execute.BulkTableScanResultSet.getNextRowCore(BulkTableScanResultSet.java:282)
>         at org.apache.derby.impl.sql.execute.BasicNoPutResultSetImpl.getNextRow(BasicNoPutResultSetImpl.java:460)
>         at org.apache.derby.impl.jdbc.EmbedResultSet.movePosition(EmbedResultSet.java:423)
>         ... 2 more

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