[hibernate-issues] [Hibernate-JIRA] Created: (HHH-3757) Performance Problem in IdentityMap

[Henry König (JIRA)]

Performance Problem in IdentityMap
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                 Key: HHH-3757
                 URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-3757
             Project: Hibernate Core
          Issue Type: Bug
          Components: core
    Affects Versions: 3.3.1
         Environment: Hibernate Version 3.3.1.GA, MS SQL Server 2000 - 8.00.2050

            Reporter: Henry König


There is a large performance problem in functions entrySet() and entryList() of IdentityMap. As opposed to the function entryArray(), which use a dirty flag, both functions create new Sets/Lists, iterate over the stored data and insert new objects if they are called.

Therefore the BatchFetchQueue of the BatchingCollectionInitializer (function getCollectionBatch()) is really, really slow.

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