Change By:

Hardy Ferentschik (22/May/13 1:08 AM)

Description:

The synchronization on {{ org.hibernate.search.backend.impl.lucene.NRTWorkspaceImpl.setupNewReadersRequirements() }} is intended to be quick-returning and only needed to provide a consistent read to method {{ refreshReaders() }} , but doesn't need to block on existing {{ refreshReaders() }} invocations, especially as these might be needing to flush deletion buffers to disks.

So a {{ refreshReaders() }} operation can be relatively slow, and this prevents a flush operation to return switfly swiftly .

This contention gets noticeable on high load exercise of parallel readers & writers on this backend.

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