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From "Jeff Clary (JIRA)" <j...@apache.org>
Subject [jira] Created: (DERBY-2462) org.apache.derby.impl.store.access.BackingStoreHashTableFromScan does not honor ResultSet holdability
Date Fri, 16 Mar 2007 19:23:09 GMT
org.apache.derby.impl.store.access.BackingStoreHashTableFromScan does not honor ResultSet holdability
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                 Key: DERBY-2462
                 URL: https://issues.apache.org/jira/browse/DERBY-2462
             Project: Derby
          Issue Type: Bug
          Components: Store
    Affects Versions: 10.2.2.0
         Environment: Test under Windows Vista, Java 1.4.2_13
            Reporter: Jeff Clary
         Attachments: DerbyHoldabilityTest.java

After an unrelated statement on the same connection commits, and after some number of successful
calls to ResultSet.next(), a subsequent call to ResultSet.next() throws an SQLException with
a message like: The heap container with container id Container(-1, 1173965368428) is closed.
 This seems to be related to the hard-coded passing of false to the super in the constructor
of org.apache.derby.impl.store.access.BackingStoreHashTableFromScan.

Steps to reproduce:

1. Execute a statement on a connection that returns a result set.

2. Execute a second statement on the same connection that modifies the database and commits.

3. Call next() on the first result set until the exception is thrown.

Note that the number of rows that can be successfully retrieved from the result set seems
to be related to the amount of data per row.  Increasing the number of columns in the result
set or the length of the columns causes the exception to be taken sooner.

The attached test program demonstrates the issue.


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