pagetree search macro causing performance issue when Confluence full reindex is performed

select ancestors0_.DESCENDENTID as DESCENDE1__, ancestors0.ANCESTORID as ANCESTORID_, ancestors0.ANCESTORPOSITION as ANCESTOR3__, contentent1.CONTENTID as CONTENTID0_, contentent1_.CONTENTTYPE as CONTENTT2_0_, contentent1_.TITLE as TITLE0_, contentent1_.VERSION as VERSION0_, contentent1_.CREATOR as CREATOR0_, contentent1_.CREATIONDATE as CREATION6_0_, contentent1_.LASTMODIFIER as LASTMODI7_0_, contentent1_.LASTMODDATE as LASTMODD8_0_, contentent1_.VERSIONCOMMENT as VERSIONC9_0_, contentent1_.PREVVER as PREVVER0_, contentent1_.CONTENT_STATUS as CONTENT11_0_, contentent1_.SPACEID as SPACEID0_, contentent1_.CHILD_POSITION as CHILD_P13_0_, contentent1_.PARENTID as PARENTID0_, contentent1_.MESSAGEID as MESSAGEID0_, contentent1_.DRAFTPAGEID as DRAFTPA16_0_, contentent1_.DRAFTSPACEKEY as DRAFTSP17_0_, contentent1_.DRAFTTYPE as DRAFTTYPE0_, contentent1_.DRAFTPAGEVERSION as DRAFTPA19_0_, contentent1_.PAGEID as PAGEID0_, contentent1_.PARENTCOMMENTID as PARENTC21_0_, contentent1_.USERNAME as USERNAME0_, contenten

"com.atlassian.confluence.search.lucene.ConfluenceMultiThreadedIndexer: 6" daemon prio=1 tid=0x00002aaacc1d6400 nid=0x150b waiting on condition [0x00000000459f8000..0x00000000459f9d90]
  	at org.postgresql.core.PGStream.ReceiveTupleV3(PGStream.java:349)
  	at org.postgresql.core.v3.QueryExecutorImpl.processResults(QueryExecutorImpl.java:1322)
  	at org.postgresql.core.v3.QueryExecutorImpl.execute(QueryExecutorImpl.java:194)
  	- locked <0x00002b0d7c50add8> (a org.postgresql.core.v3.QueryExecutorImpl)
  	at org.postgresql.jdbc2.AbstractJdbc2Statement.execute(AbstractJdbc2Statement.java:451)
  	at org.postgresql.jdbc2.AbstractJdbc2Statement.executeWithFlags(AbstractJdbc2Statement.java:350)
  	at org.postgresql.jdbc2.AbstractJdbc2Statement.executeQuery(AbstractJdbc2Statement.java:254)
  	at org.apache.tomcat.dbcp.dbcp.DelegatingPreparedStatement.executeQuery(DelegatingPreparedStatement.java:93)
  	at net.sf.hibernate.impl.BatcherImpl.getResultSet(BatcherImpl.java:89)
  	at net.sf.hibernate.loader.Loader.getResultSet(Loader.java:880)
  	at net.sf.hibernate.loader.Loader.doQuery(Loader.java:273)
  	at net.sf.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:138)
  	at net.sf.hibernate.loader.Loader.loadCollection(Loader.java:1020)
  	at net.sf.hibernate.loader.Loader.loadCollection(Loader.java:995)
  	at net.sf.hibernate.loader.CollectionLoader.initialize(CollectionLoader.java:83)
  	at net.sf.hibernate.collection.AbstractCollectionPersister.initialize(AbstractCollectionPersister.java:288)
  	at net.sf.hibernate.impl.SessionImpl.initializeCollection(SessionImpl.java:3315)
  	at net.sf.hibernate.collection.PersistentCollection.initialize(PersistentCollection.java:195)
  	at net.sf.hibernate.collection.PersistentCollection.read(PersistentCollection.java:71)
  	at net.sf.hibernate.collection.List.iterator(List.java:103)
  	at com.atlassian.confluence.plugins.pagetree.PageHierarchyExtractor.addFields(PageHierarchyExtractor.java:78)
  	at com.atlassian.confluence.plugin.descriptor.ExtractorModuleDescriptor$BackwardsCompatibleExtractor.addFields(ExtractorModuleDescriptor.java:43)
  	at com.atlassian.bonnie.search.BaseDocumentBuilder.getDocument(BaseDocumentBuilder.java:104)
  	at com.atlassian.confluence.search.lucene.ConfluenceDocumentBuilder.getDocument(ConfluenceDocumentBuilder.java:89)
  	at com.atlassian.confluence.search.lucene.ConfluenceObjectToDocumentConverter.convert(ConfluenceObjectToDocumentConverter.java:30)
  	at com.atlassian.confluence.search.lucene.ConfluenceObjectQueue$1.indexCollection(ConfluenceObjectQueue.java:79)
  	at com.atlassian.bonnie.index.QueueProcessingRunnableImpl.run(QueueProcessingRunnableImpl.java:39)
  	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
  	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
  	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
  	at java.lang.reflect.Method.invoke(Method.java:585)
  	at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:304)
  	at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:182)
  	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:149)
  	at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:106)
  	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)
  	at org.springframework.aop.interceptor.ExposeInvocationInterceptor.invoke(ExposeInvocationInterceptor.java:89)
  	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:171)
  	at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:204)
  	at $Proxy670.run(Unknown Source)
  	at edu.emory.mathcs.backport.java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:987)
  	at edu.emory.mathcs.backport.java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:528)
  	at java.lang.Thread.run(Thread.java:595)