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Posted to derby-dev@db.apache.org by "Kristian Waagan (JIRA)" <ji...@apache.org> on 2012/06/20 14:23:42 UTC

[jira] [Updated] (DERBY-5823) Multi-row insert fails on table without generated keys with RETURN_GENERATED_KEYS

     [ https://issues.apache.org/jira/browse/DERBY-5823?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Kristian Waagan updated DERBY-5823:
-----------------------------------

    Attachment: derby-5823-1a-regression_test.diff

Note that this bug was logged due to the following thread on derby-user: "Conglomerate could not be created"? [1]

Attaching a regression test at patch as 1a.
I haven't verified that Derby does the right thing when it comes to what it returns for getGeneratedKeys, so it may fail also when the problems described by this JIRA has been fixed.

[1] http://mail-archives.apache.org/mod_mbox/db-derby-user/201206.mbox/%3C4FC8B339.8090502%40gmail.com%3E
                
> Multi-row insert fails on table without generated keys with RETURN_GENERATED_KEYS
> ---------------------------------------------------------------------------------
>
>                 Key: DERBY-5823
>                 URL: https://issues.apache.org/jira/browse/DERBY-5823
>             Project: Derby
>          Issue Type: Bug
>          Components: JDBC
>    Affects Versions: 10.7.1.1, 10.8.2.2, 10.9.1.0, 10.10.0.0
>            Reporter: Kristian Waagan
>            Priority: Minor
>         Attachments: derby-5823-1a-regression_test.diff
>
>
> Exeuting an insert that results in multiple rows being inserted into a table without any generated keys defined fails if the JDBC statement is configured to return generated keys. Example stack trace:
> Caused by: ERROR XSCH4: Conglomerate could not be created.
>         at org.apache.derby.iapi.error.StandardException.newException(StandardException.java:268)
>         at org.apache.derby.impl.store.access.heap.Heap.create(Heap.java:296)
>         at org.apache.derby.impl.store.access.heap.HeapConglomerateFactory.createConglomerate(HeapConglomerateFactory.java:206)
>         at org.apache.derby.impl.store.access.RAMTransaction.createConglomerate(RAMTransaction.java:820)
>         at org.apache.derby.impl.sql.execute.TemporaryRowHolderImpl.insert(TemporaryRowHolderImpl.java:302)
>         at org.apache.derby.impl.sql.execute.InsertResultSet.normalInsertCore(InsertResultSet.java:1007)
>         at org.apache.derby.impl.sql.execute.InsertResultSet.open(InsertResultSet.java:508)
>         at org.apache.derby.impl.sql.GenericPreparedStatement.executeStmt(GenericPreparedStatement.java:443)
>         at org.apache.derby.impl.sql.GenericPreparedStatement.execute(GenericPreparedStatement.java:324)
>         at org.apache.derby.impl.jdbc.EmbedStatement.executeStatement(EmbedStatement.java:1242)
>         ... 30 more
> This happens only with multi-row inserts, and only with the embedded driver (the client driver uses IDENTITY_VAL_LOCAL).
> The problem is that Derby tries to create a temporary conglomerate with a zero-length row template. A guard against this scenario is probably missing.
> FYI, the transition threshold (from in-memory to on-disk) is currently five rows.
> I marked versions back to 10.7 as affected, but this bug probably goes back all the way.

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