[infinispan-issues] [JBoss JIRA] (ISPN-4710) DistributedSegmentReadLocker should be allowed to skip ReadLocks on small files

DistributedSegmentReadLocker should be allowed to skip ReadLocks on small files ------------------------------------------------------------------------------- Key: ISPN-4710 URL: https://issues.jboss.org/browse/ISPN-4710 Project: Infinispan Issue Type: Enhancement Components: Lucene Directory Reporter: Sanne Grinovero Assignee: Gustavo Fernandes Fix For: 7.0.0.CR1 Both of these methods: - {{org.infinispan.lucene.readlocks.DistributedSegmentReadLocker.deleteOrReleaseReadLock(String)}} - {{org.infinispan.lucene.readlocks.DistributedSegmentReadLocker.realFileDelete(FileReadLockKey, AdvancedCache<Object, Integer>, AdvancedCache<?, ?>, AdvancedCache<?, ?>, boolean)}} Are performing a lot of unnecessary operations - potentially on synchronous clustered caches - as we know in advance that files which are not being chunked don't need a read lock, and are not being chunked in smaller pieces (which affects how we delete things). The determining factor between the two styles is defined in: {{org.infinispan.lucene.impl.DirectoryLuceneV4.openInput(String, IOContext)}} {code} @Override public IndexInput openInput(final String name, final IOContext context) throws IOException { final IndexInputContext indexInputContext = impl.openInput(name); if ( indexInputContext.readLocks == null ) { return new SingleChunkIndexInput(indexInputContext); } else { return new InfinispanIndexInput(indexInputContext); } }{code}