SingleLevelGroupByReport with Empty Filter Causes OOME

http-nio-8080-exec-70    url:/secure/ConfigureReport.jspa
  at org.apache.lucene.store.DataInput.readString (DataInput.java:182)
  at org.apache.lucene.index.FieldsReader.addField (FieldsReader.java:431)
  at org.apache.lucene.index.FieldsReader.doc (FieldsReader.java:261)
  at org.apache.lucene.index.SegmentReader.document (SegmentReader.java:471)
  at org.apache.lucene.index.DirectoryReader.document (DirectoryReader.java:564)
  at org.apache.lucene.index.IndexReader.document (IndexReader.java:844)
  at com.atlassian.jira.issue.statistics.util.OneDimensionalDocIssueHitCollector.getDocument (OneDimensionalDocIssueHitCollector.java:53)
  at com.atlassian.jira.issue.statistics.util.OneDimensionalDocIssueHitCollector.collectWithTerms (OneDimensionalDocIssueHitCollector.java:45)
  at com.atlassian.jira.issue.statistics.util.AbstractOneDimensionalHitCollector.collect (AbstractOneDimensionalHitCollector.java:166)
  at com.atlassian.jira.issue.search.providers.LuceneSearchProvider.searchAndSort (LuceneSearchProvider.java:349)
  at com.atlassian.jira.issue.search.providers.LuceneSearchProvider.searchAndSort (LuceneSearchProvider.java:140)
  at sun.reflect.GeneratedMethodAccessor1725.invoke (Unknown Source)
  at sun.reflect.DelegatingMethodAccessorImpl.invoke (DelegatingMethodAccessorImpl.java:43)
  at java.lang.reflect.Method.invoke (Method.java:498)
  at com.atlassian.plugin.util.ContextClassLoaderSettingInvocationHandler.invoke (ContextClassLoaderSettingInvocationHandler.java:26)
  at com.sun.proxy.$Proxy47.searchAndSort (Unknown Source)
  at sun.reflect.GeneratedMethodAccessor1725.invoke (Unknown Source)
  at sun.reflect.DelegatingMethodAccessorImpl.invoke (DelegatingMethodAccessorImpl.java:43)
  at java.lang.reflect.Method.invoke (Method.java:498)
  at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection (AopUtils.java:317)
  at org.eclipse.gemini.blueprint.service.importer.support.internal.aop.ServiceInvoker.doInvoke (ServiceInvoker.java:56)
  at org.eclipse.gemini.blueprint.service.importer.support.internal.aop.ServiceInvoker.invoke (ServiceInvoker.java:60)
  at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed (ReflectiveMethodInvocation.java:179)
  at org.springframework.aop.support.DelegatingIntroductionInterceptor.doProceed (DelegatingIntroductionInterceptor.java:133)
  at org.springframework.aop.support.DelegatingIntroductionInterceptor.invoke (DelegatingIntroductionInterceptor.java:121)
  at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed (ReflectiveMethodInvocation.java:179)
  at org.eclipse.gemini.blueprint.service.util.internal.aop.ServiceTCCLInterceptor.invokeUnprivileged (ServiceTCCLInterceptor.java:70)
  at org.eclipse.gemini.blueprint.service.util.internal.aop.ServiceTCCLInterceptor.invoke (ServiceTCCLInterceptor.java:53)
  at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed (ReflectiveMethodInvocation.java:179)
  at org.eclipse.gemini.blueprint.service.importer.support.LocalBundleContextAdvice.invoke (LocalBundleContextAdvice.java:57)
  at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed (ReflectiveMethodInvocation.java:179)
  at org.springframework.aop.support.DelegatingIntroductionInterceptor.doProceed (DelegatingIntroductionInterceptor.java:133)
  at org.springframework.aop.support.DelegatingIntroductionInterceptor.invoke (DelegatingIntroductionInterceptor.java:121)
  at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed (ReflectiveMethodInvocation.java:179)
  at org.springframework.aop.framework.JdkDynamicAopProxy.invoke (JdkDynamicAopProxy.java:207)
  at com.sun.proxy.$Proxy2163.searchAndSort (Unknown Source)
  at com.atlassian.jira.plugin.corereports.report.impl.SingleLevelGroupByReport.searchMapIssueKeys (SingleLevelGroupByReport.java:100)
  at com.atlassian.jira.plugin.corereports.report.impl.SingleLevelGroupByReport.getOptions (SingleLevelGroupByReport.java:85)
  at com.atlassian.jira.plugin.corereports.report.impl.SingleLevelGroupByReport.generateReportHtml (SingleLevelGroupByReport.java:126)
  at com.atlassian.jira.plugin.corereports.web.action.ConfigureReport.doExecute (ConfigureReport.java:172)
  at webwork.action.ActionSupport.execute (ActionSupport.java:165)
  at com.atlassian.jira.action.JiraActionSupport.execute (JiraActionSupport.java:63)
  at webwork.interceptor.DefaultInterceptorChain.proceed (DefaultInterceptorChain.java:39)
  at webwork.interceptor.NestedInterceptorChain.proceed (NestedInterceptorChain.java:31)
  at webwork.interceptor.ChainedInterceptor.intercept (ChainedInterceptor.java:16)
  at webwork.interceptor.DefaultInterceptorChain.proceed (DefaultInterceptorChain.java:35)
  at webwork.dispatcher.GenericDispatcher.executeAction (GenericDispatcher.java:225)
  at webwork.dispatcher.GenericDispatcher.executeAction (GenericDispatcher.java:154)