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From "Andreas Korneliussen (JIRA)" <derby-...@db.apache.org>
Subject [jira] Updated: (DERBY-1058) derby fails supporting holdable scrollable resultset: ERROR XSCB8: The btree conglomerate 1,141,037,436,752 is closed.
Date Tue, 07 Mar 2006 11:53:39 GMT
     [ http://issues.apache.org/jira/browse/DERBY-1058?page=all ]

Andreas Korneliussen updated DERBY-1058:
----------------------------------------

    Attachment: derbyall_report.txt
                DERBY-1058v2.diff
                DERBY-1058v2.stat

Attaching an update of the patch for this issue, where the HoldabilityTest.junit (reproducing
this issue) has been enabled in the jdbcapi suite.
Attached is also my derbyall report. One test failed (sysinfo). Manual reruns of this test
indicates that it is a problem with the policy file for the Network server, and not a problem
related to this patch.


> derby fails supporting holdable scrollable resultset: ERROR XSCB8: The btree conglomerate
1,141,037,436,752 is closed.
> ----------------------------------------------------------------------------------------------------------------------
>
>          Key: DERBY-1058
>          URL: http://issues.apache.org/jira/browse/DERBY-1058
>      Project: Derby
>         Type: Bug
>   Components: SQL, Store
>     Versions: 10.1.2.1
>  Environment: All
>     Reporter: Andreas Korneliussen
>     Assignee: Andreas Korneliussen
>  Attachments: DERBY-1058.diff, DERBY-1058.stat, DERBY-1058v2.diff, DERBY-1058v2.stat,
HoldabilityIssue.java, derbyall_report.txt
>
> If the ResultSet is so big that the scrollable resultset needs to back the hashtable
to disk, and the resultset is not fully populated before a commit(),
> a call to next() will fail with:
> ak136785@khepri35:/<3>db-derby-10.1.2.1-bin/lib> java -cp /home/ak136785/devel/derbytesting/derbytest/build/classes/:./derby.jar
derbytest.HoldabilityIssue
> ERROR XSCB8: The btree conglomerate 1,141,037,436,752 is closed.
>         at org.apache.derby.iapi.error.StandardException.newException(Unknown Source)
>         at org.apache.derby.impl.store.access.btree.BTreeController.insert(Unknown Source)
>         at org.apache.derby.impl.store.access.btree.index.B2IController.insert(Unknown
Source)
>         at org.apache.derby.iapi.store.access.DiskHashtable.put(Unknown Source)
>         at org.apache.derby.iapi.store.access.BackingStoreHashtable.spillToDisk(Unknown
Source)
>         at org.apache.derby.iapi.store.access.BackingStoreHashtable.add_row_to_hash_table(Unknown
Source)
>         at org.apache.derby.iapi.store.access.BackingStoreHashtable.put(Unknown Source)
>         at org.apache.derby.impl.sql.execute.ScrollInsensitiveResultSet.addRowToHashTable(Unknown
Source)
>         at org.apache.derby.impl.sql.execute.ScrollInsensitiveResultSet.getNextRowFromSource(Unknown
Source)
>         at org.apache.derby.impl.sql.execute.ScrollInsensitiveResultSet.getNextRowCore(Unknown
Source)
>         at org.apache.derby.impl.sql.execute.BasicNoPutResultSetImpl.getNextRow(Unknown
Source)
>         at org.apache.derby.impl.jdbc.EmbedResultSet.movePosition(Unknown Source)
>         at org.apache.derby.impl.jdbc.EmbedResultSet.next(Unknown Source)
>         at derbytest.HoldabilityIssue.runTest1(HoldabilityIssue.java:72)
>         at derbytest.HoldabilityIssue.main(HoldabilityIssue.java:91)
> ak136785@khepri35:/<3>db-derby-10.1.2.1-bin/lib>
> The BtreeController is always initialized as non-holdable, and if this is changed, Derby
has the following assert in closeForEndTransaction(..):
>    SanityManager.THROWASSERT("There is currently no requirement for a held btree conglomerate
controller.");
> A simple test program is attached which reproduces this failure. It fails in the trunk
and on the 10.1.2.1 release

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