[hibernate-issues] [Hibernate-JIRA] Created: (HSEARCH-521) Improve performance MassIndexer through Eager fetching

[Marc Schipperheyn (JIRA)]

Improve performance MassIndexer through Eager fetching
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                 Key: HSEARCH-521
                 URL: http://opensource.atlassian.com/projects/hibernate/browse/HSEARCH-521
             Project: Hibernate Search
          Issue Type: Improvement
          Components: engine
    Affects Versions: 3.2.0.CR1
            Reporter: Marc Schipperheyn
            Priority: Minor


The MassIndexer fetches all of a certain entity from the database. It then proceeds to index it and the tree of IndexedEmbedded objects is traversed. In doing so, a lot of additional queries get executed. These queries are not really necessary, since we know beforehand that the data is needed for the indexing operation. So it would make sense to eagerly fetch all associations that are marked as indexEmbedded. This way MassIndexer would significantly speed up.

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