[hibernate-issues] [Hibernate-JIRA] Created: (HHH-2806) Enhanced TableGenerator is not cluster-safe on MySQL (does not use correct table type)

[Matt Solnit (JIRA)]

Enhanced TableGenerator is not cluster-safe on MySQL (does not use correct table type)
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                 Key: HHH-2806
                 URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-2806
             Project: Hibernate3
          Issue Type: Bug
          Components: core
    Affects Versions: 3.2.5
         Environment: Mac OS X 10.4.10 (Intel), Java 1.5.0_07, MySQL 5.0.24a
            Reporter: Matt Solnit
            Priority: Critical


The org.hibernate.id.enanced.TableGenerator.sqlCreateStrings() method does not include a call to Dialect.getTableTypeString().  This means that on MySQL, it will +always+ use MyISAM, even if the Hibernate dialect is "MySQL5InnoDBDialect".

The result is that the FOR UPDATE lock has no effect, and the generator is not cluster-safe.  In other words, multiple Hibernate applications can receive the same ID and get a primary key violation.

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