Package org.infinispan.lucene.readlocks

Several implementations for a SegmentReadLocker, pick one depending on your use case. Lucene's default IndexDeletionPolicy could remove a segment while it's still used by another IndexReader; this is not an issue on a local filesystem, but could happen on Infinispan. To prevent deletion of in-use segments a read-lock is acquired when a segment is opened.

Interface Summary

Interface	Description
SegmentReadLocker	SegmentReadLocker implementations have to make sure that segments are not deleted while they are being used by an IndexReader.

Class Summary

Class	Description
DistributedSegmentReadLocker	DistributedSegmentReadLocker stores reference counters in the cache to keep track of the number of clients still needing to be able to read a segment.
LocalLockMergingSegmentReadLocker	LocalLockMergingSegmentReadLocker decorates the DistributedSegmentReadLocker to minimize remote operations in case several IndexReaders are opened on the same Infinispan based Directory.
NoopSegmentReadLocker	NoopSegmentReadLocker ignores requests to apply a readlock, but also ignores requests to delete files.