[hibernate-issues] [Hibernate-JIRA] Commented: (HSEARCH-573) PerDPQueueProcessor forces release of lock even if not held - causes corrupt index

PerDPQueueProcessor forces release of lock even if not held - causes corrupt index ---------------------------------------------------------------------------------- Key: HSEARCH-573 URL: http://opensource.atlassian.com/projects/hibernate/browse/HSEARCH-573 Project: Hibernate Search Issue Type: Bug Components: engine, massindexer Affects Versions: 3.2.0.CR1, 3.2.0.Final, 3.2.1, 3.3.0.Alpha1 Environment: Hibernate 3.5.0-Final, Oracle 10g Reporter: Christian Köberl Assignee: Emmanuel Bernard Fix For: 3.2.2, 3.3.0.CR1 Attachments: testHibernateSearchLockFailure.zip Occurs: when an indexed entity is modified while another thread is re-indexing the index for that entity Consequences: Hibernate Search calls "workspace.forceLockRelease();" in the catch-block of PerDPQueueProcessor#run - so the lock held by the batch indexer is forcefully released. That means the next entity index operation will write to the index causing the index to be corrupt. h2. First Exception - triggers forceLockRelease {noformat} ERROR| Unexpected error in Lucene Backend: | at org.hibernate.search.backend.impl.lucene.PerDPQueueProcessor.run(PerDPQueueProcessor.java:118) org.hibernate.search.SearchException: Unable to open IndexWriter at org.hibernate.search.backend.Workspace.getIndexWriter(Workspace.java:159) at org.hibernate.search.backend.impl.lucene.PerDPQueueProcessor.run(PerDPQueueProcessor.java:103) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:432) at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:284) at java.util.concurrent.FutureTask.run(FutureTask.java:138) at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:678) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:703) at java.lang.Thread.run(Thread.java:811) Caused by: org.apache.lucene.store.LockObtainFailedException: Lock obtain timed out: SimpleFSLock@C:\Temp\turntableLuceneIndex\LogEntry\lucene-74da319434c1dd9f133d63245791e1b4-write.lock at org.apache.lucene.store.Lock.obtain(Lock.java:85) at org.apache.lucene.index.IndexWriter.init(IndexWriter.java:1538) at org.apache.lucene.index.IndexWriter.<init>(IndexWriter.java:1067) at org.hibernate.search.backend.Workspace.getIndexWriter(Workspace.java:152) ... 7 more WARN | going to force release of the IndexWriter lock | at org.hibernate.search.backend.Workspace.forceLockRelease(Workspace.java:221) {noformat} h2. second Exception - index is destroyed {noformat} ERROR| Exception occurred org.hibernate.search.SearchException: Unable to add to Lucene index: class com.poi.egh.turntable.vehicle.domain.vehicle.Vehicle#200 Primary Failure: Entity com.poi.egh.turntable.vehicle.domain.vehicle.Vehicle Id 200 Work Type org.hibernate.search.backend.AddLuceneWork | at org.hibernate.search.exception.impl.LogErrorHandler.logError(LogErrorHandler.java:83) org.hibernate.search.SearchException: Unable to add to Lucene index: class com.poi.egh.turntable.vehicle.domain.vehicle.Vehicle#200 at org.hibernate.search.backend.impl.lucene.works.AddWorkDelegate.performWork(AddWorkDelegate.java:81) at org.hibernate.search.backend.impl.lucene.PerDPQueueProcessor.run(PerDPQueueProcessor.java:106) at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:432) at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:284) at java.util.concurrent.FutureTask.run(FutureTask.java:138) at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:678) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:703) at java.lang.Thread.run(Thread.java:811) Caused by: java.io.IOException: Cannot overwrite: C:\temp\turntableLuceneIndex\vehicle\_5.fdt at org.apache.lucene.store.FSDirectory.initOutput(FSDirectory.java:362) at org.apache.lucene.store.SimpleFSDirectory.createOutput(SimpleFSDirectory.java:58) at org.apache.lucene.index.FieldsWriter.<init>(FieldsWriter.java:61) at org.apache.lucene.index.StoredFieldsWriter.initFieldsWriter(StoredFieldsWriter.java:66) at org.apache.lucene.index.StoredFieldsWriter.finishDocument(StoredFieldsWriter.java:144) at org.apache.lucene.index.StoredFieldsWriter$PerDoc.finish(StoredFieldsWriter.java:190) at org.apache.lucene.index.DocumentsWriter$WaitQueue.writeDocument(DocumentsWriter.java:1466) at org.apache.lucene.index.DocumentsWriter$WaitQueue.add(DocumentsWriter.java:1485) at org.apache.lucene.index.DocumentsWriter.finishDocument(DocumentsWriter.java:1089) at org.apache.lucene.index.DocumentsWriter.updateDocument(DocumentsWriter.java:775) at org.apache.lucene.index.DocumentsWriter.addDocument(DocumentsWriter.java:750) at org.apache.lucene.index.IndexWriter.addDocument(IndexWriter.java:2454) at org.hibernate.search.backend.impl.lucene.works.AddWorkDelegate.performWork(AddWorkDelegate.java:77) ... 7 more {noformat}