更新索引和重建索引，多点几次就出现一下的错误

jbuilder7带的jakarta-tomcat-4.0.3

和Apache Tomcat/4.1.27

都这样

ERROR: Failed to create a new index writer.

java.io.IOException: couldn't delete _e.f1

at org.apache.lucene.store.FSDirectory.create(FSDirectory.java:89)

at org.apache.lucene.store.FSDirectory.getDirectory(FSDirectory.java:59)

at org.apache.lucene.store.FSDirectory.getDirectory(FSDirectory.java:37)

at org.apache.lucene.index.IndexWriter.<init>(Unknown Source)

at com.jivesoftware.forum.database.DbSearchManager.getWriter(DbSearchManager.java:568)

at com.jivesoftware.forum.database.DbSearchManager.rebuildIndex(DbSearchManager.java:409)

at com.jivesoftware.forum.database.DbSearchManager.access$4(DbSearchManager.java:35)

at com.jivesoftware.forum.database.DbSearchManager$IndexTask.run(DbSearchManager.java:664)

at com.jivesoftware.forum.util.TaskEngine$TaskEngineWorker.run(TaskEngine.java:165)

at java.lang.Thread.run(Thread.java:534)

java.lang.NullPointerException

at com.jivesoftware.forum.database.DbSearchManager.rebuildIndex(DbSearchManager.java:456)

at com.jivesoftware.forum.database.DbSearchManager.access$4(DbSearchManager.java:35)

at com.jivesoftware.forum.database.DbSearchManager$IndexTask.run(DbSearchManager.java:664)

at com.jivesoftware.forum.util.TaskEngine$TaskEngineWorker.run(TaskEngine.java:165)

at java.lang.Thread.run(Thread.java:534)

java.lang.NullPointerException

at com.jivesoftware.forum.database.DbSearchManager.rebuildIndex(DbSearchManager.java:467)

at com.jivesoftware.forum.database.DbSearchManager.access$4(DbSearchManager.java:35)

at com.jivesoftware.forum.database.DbSearchManager$IndexTask.run(DbSearchManager.java:664)

at com.jivesoftware.forum.util.TaskEngine$TaskEngineWorker.run(TaskEngine.java:165)

at java.lang.Thread.run(Thread.java:534)