[hibernate-issues] [Hibernate-JIRA] Created: (HSEARCH-222) Entities not found during concurrent update

[Sanne Grinovero (JIRA)]

Entities not found during concurrent update
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                 Key: HSEARCH-222
                 URL: http://opensource.atlassian.com/projects/hibernate/browse/HSEARCH-222
             Project: Hibernate Search
          Issue Type: Bug
          Components: directory provider, engine
            Reporter: Sanne Grinovero
            Assignee: Sanne Grinovero


As we update an entity by deleting it from index by using a database, and afterwards we reinsert it
using an IndexWriter, there is a point in time in the middle were no DPlock is held on the Directory,
At this moment a ReaderProvider could (re)open the index and
all searches performed on this IndexReader will not find the entity at all.
We should use a Read/Write Lock on DP instead of the current ReentrantLock to use a write
lock during index updates and avoid creating a bottleneck for different threads needing a searcher.

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