title: Where is the default path to the apache lucene index file with grails searchable plugin?
body: <p>I'm using in my grails 1.3.7 project the searchable plugin. My project was running well until my macbooks harddrive was full and osx threw an message about memory problems and that it'll delete some files (tmp and so on) (after that i deleted some movies and got more than 10GB free space). I didn't change the sourcecode but when i start my grails app now, i get the following exception:</p>
  
  <pre><code>Running Grails application..
  Configuring Spring Security ...
  Configuring SpringSocial Facebook
  2011-11-18 01:54:16,804 [main] ERROR context.GrailsContextLoader  - Error executing        bootstraps: Failed to retrieve transaction locks; nested exception is java.io.IOException:    Permission denied
  org.compass.core.engine.SearchEngineException: Failed to retrieve transaction locks; nested exception is java.io.IOException: Permission denied
  java.io.IOException: Permission denied
  at java.io.UnixFileSystem.createFileExclusively(Native Method)
  at java.io.File.createNewFile(File.java:883)
  at org.apache.lucene.store.SimpleFSLock.obtain(SimpleFSLockFactory.java:144)
  at org.apache.lucene.store.Lock.obtain(Lock.java:73)
  at org.compass.core.lucene.engine.manager.DefaultLuceneSearchEngineIndexManager$6.doInTransaction(DefaultLuceneSearchEngineIndexManager.java:203)
  at org.compass.core.impl.DefaultCompass$CompassTransactionContext.execute(DefaultCompass.java:423)
  at org.compass.core.lucene.engine.manager.DefaultLuceneSearchEngineIndexManager.doOperate(DefaultLuceneSearchEngineIndexManager.java:197)
  at org.compass.core.lucene.engine.manager.DefaultLuceneSearchEngineIndexManager.doReplaceIndex(DefaultLuceneSearchEngineIndexManager.java:266)
  at org.compass.core.lucene.engine.manager.DefaultLuceneSearchEngineIndexManager.replaceIndex(DefaultLuceneSearchEngineIndexManager.java:261)
  at org.compass.gps.impl.SingleCompassGps.doIndex(SingleCompassGps.java:118)
  at org.compass.gps.impl.AbstractCompassGps.index(AbstractCompassGps.java:154)
  at org.compass.gps.impl.AbstractCompassGps.index(AbstractCompassGps.java:128)
  at grails.plugin.searchable.internal.compass.CompassGpsUtils.index(CompassGpsUtils.java:49)
  at grails.plugin.searchable.internal.compass.CompassGpsUtils$index.call(Unknown Source)
  at SearchableGrailsPlugin$_closure3.doCall(SearchableGrailsPlugin.groovy:158)
  at org.grails.tomcat.TomcatServer.start(TomcatServer.groovy:212)
  at grails.web.container.EmbeddableServer$start.call(Unknown Source)
  at _GrailsRun_groovy$_run_closure5_closure12.doCall(_GrailsRun_groovy:158)
  at _GrailsRun_groovy$_run_closure5_closure12.doCall(_GrailsRun_groovy)
  at _GrailsSettings_groovy$_run_closure10.doCall(_GrailsSettings_groovy:280)
  at _GrailsSettings_groovy$_run_closure10.call(_GrailsSettings_groovy)
  at _GrailsRun_groovy$_run_closure5.doCall(_GrailsRun_groovy:149)
  at _GrailsRun_groovy$_run_closure5.call(_GrailsRun_groovy)
  at _GrailsRun_groovy.runInline(_GrailsRun_groovy:116)
  at _GrailsRun_groovy.this$4$runInline(_GrailsRun_groovy)
  at _GrailsRun_groovy$_run_closure1.doCall(_GrailsRun_groovy:59)
  at RunApp$_run_closure1.doCall(RunApp:33)
  at gant.Gant$_dispatch_closure5.doCall(Gant.groovy:381)
  at gant.Gant$_dispatch_closure7.doCall(Gant.groovy:415)
  at gant.Gant$_dispatch_closure7.doCall(Gant.groovy)
  at gant.Gant.withBuildListeners(Gant.groovy:427)
  at gant.Gant.this$2$withBuildListeners(Gant.groovy)
  at gant.Gant$this$2$withBuildListeners.callCurrent(Unknown Source)
  at gant.Gant.dispatch(Gant.groovy:415)
  at gant.Gant.this$2$dispatch(Gant.groovy)
  at gant.Gant.invokeMethod(Gant.groovy)
  at gant.Gant.executeTargets(Gant.groovy:590)
  at gant.Gant.executeTargets(Gant.groovy:589)
  Application context shutting down...
  Application context shutdown.
  </code></pre>
  
  <p>I think there is a problem with the lucene index in filesystem, but where can i find it? Where is the lucene index folder or file stored? I didn't change the plugins configuration.</p>