[hibernate-issues] [Hibernate-JIRA] Created: (HSEARCH-998) Unlock at startup using SimpleFSLockFactory

[David Polo (JIRA)]

Unlock at startup using SimpleFSLockFactory
-------------------------------------------

                 Key: HSEARCH-998
                 URL: http://opensource.atlassian.com/projects/hibernate/browse/HSEARCH-998
             Project: Hibernate Search
          Issue Type: Bug
          Components: massindexer
    Affects Versions: 4.0.0.CR2
         Environment: Java 1.6, Hibernate Search 4.0.0.CR2 on Oracle Database 10g Enterprise Edition Release 10.2.0.3.0 - 64bits
            Reporter: David Polo


I'm using SimpleFSLockFactory and I'm getting this exception after an unexpected shutdown of the application during indexation:

org.apache.lucene.store.LockObtainFailedException: Lock obtain timed out

The workaround consists in executing this code at startup in order to unlock the indexes:

      FullTextSession fullTextSession = Search.getFullTextSession(hbSession);

      MutableSearchFactory searchFactory = (MutableSearchFactory) fullTextSession
            .getSearchFactory();

      IndexReader indexReader = fullTextSession.getSearchFactory()
            .getIndexReaderAccessor().open("");

      Map<Class<?>, EntityIndexBinder> indexBindingsForEntity = searchFactory
            .getIndexBindingForEntity();

      for (EntityIndexBinder eib : indexBindingsForEntity.values()) {
         IndexManager[] indexManagers = eib.getIndexManagers();
         DirectoryBasedIndexManager indexManager = (DirectoryBasedIndexManager) indexManagers[0];

         Directory indexDirectory = indexManager.getDirectoryProvider()
               .getDirectory();

         if (IndexWriter.isLocked(indexDirectory)) {
            IndexWriter.unlock(indexDirectory);
         }
      }

I have a single application that executes this code at startup so I think it's safe to unlock the Directory at this time.

I'm doing this because I'm using SimpleFSLockFactory and it leaves write.lock files.
I need to unlock at startup because I think using NativeFSLockFactory is not an option for me (I'm using NFS).

It will be a good thing if Hibernate Search have an "unlock at startup" option. It could be used only in cases like this (not all cases!).

In Solr there is an option:

<unlockOnStartup>true</unlockOnStartup>







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