java.lang.OutOfMemoryError: GC overhead limit exceeded
   at java.lang.StringCoding$StringDecoder.decode(StringCoding.java:149)
   at java.lang.StringCoding.decode(StringCoding.java:193)
   at java.lang.String.<init>(String.java:414)
   at org.apache.lucene.store.DataInput.readString(DataInput.java:182)
   at org.apache.lucene.index.FieldsReader.addField(FieldsReader.java:423)
   at org.apache.lucene.index.FieldsReader.doc(FieldsReader.java:253)
   at org.apache.lucene.index.SegmentReader.document(SegmentReader.java:477)
   at org.apache.lucene.index.DirectoryReader.document(DirectoryReader.java:583)
   at org.netbeans.modules.parsing.lucene.LuceneIndex.query(LuceneIndex.java:200)
   at org.netbeans.modules.parsing.lucene.DocumentIndexImpl.query(DocumentIndexImpl.java:284)
   at org.netbeans.modules.parsing.impl.indexing.lucene.LayeredDocumentIndex.query(LayeredDocumentIndex.java:205)
   at org.netbeans.modules.parsing.spi.indexing.support.QuerySupport$Query$1.call(QuerySupport.java:652)
   at org.netbeans.modules.parsing.spi.indexing.support.QuerySupport$Query$1.call(QuerySupport.java:613)
   at org.netbeans.modules.masterfs.filebasedfs.utils.FileChangedManager.priorityIO(FileChangedManager.java:176)
   at org.netbeans.modules.masterfs.providers.ProvidedExtensions.priorityIO(ProvidedExtensions.java:360)
   at org.netbeans.modules.parsing.nb.DataObjectEnvFactory.runPriorityIO(DataObjectEnvFactory.java:141)
   at org.netbeans.modules.parsing.impl.Utilities.runPriorityIO(Utilities.java:88)
   at org.netbeans.modules.parsing.spi.indexing.support.QuerySupport$Query.execute(QuerySupport.java:613)
   at org.netbeans.modules.parsing.spi.indexing.support.QuerySupport.query(QuerySupport.java:365)
   at org.netbeans.modules.php.editor.elements.IndexQueryImpl.search(IndexQueryImpl.java:1591)
   at org.netbeans.modules.php.editor.elements.IndexQueryImpl.getLocationsForIdentifiers(IndexQueryImpl.java:717)
   at org.netbeans.modules.php.editor.model.FindUsageSupport.inFiles(FindUsageSupport.java:168)
   at org.netbeans.modules.refactoring.php.findusages.WhereUsedSupport.getRelevantFiles(WhereUsedSupport.java:274)
   at org.netbeans.modules.refactoring.php.findusages.PhpWhereUsedQueryPlugin.prepare(PhpWhereUsedQueryPlugin.java:85)
   at org.netbeans.modules.refactoring.api.AbstractRefactoring.pluginsPrepare2(AbstractRefactoring.java:442)
   at org.netbeans.modules.refactoring.api.AbstractRefactoring.pluginsPrepare(AbstractRefactoring.java:426)
   at org.netbeans.modules.refactoring.api.AbstractRefactoring.prepare(AbstractRefactoring.java:237)
   at org.netbeans.modules.refactoring.spi.impl.ParametersPanel$Prepare$2.run(ParametersPanel.java:1036)
   at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:1443)
   at org.netbeans.modules.openide.util.GlobalLookup.execute(GlobalLookup.java:68)
   at org.openide.util.lookup.Lookups.executeWith(Lookups.java:303)
   at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:2058)