[TYPO3-Solr] Problem: the same page appears twice in search results

[Dmitry Dulepov]

Hi!

We have an interesting situation with indexing protected content. Setup:

==================================
page: uid=134,fe_group=68
|- ce #1: group=0
|- ce #2: group=68
==================================

Indexing this page leads to two entries in the solr index with the 
following data:

==================================
<doc>
	<str name="access">134:68/c:0</str>
	<str name="id">
		a338c9ed1e9a5abd900865b06bea55be/pages/132/134/0/0/0,68
	</str>
	<int name="uid">134</int>
</doc>
<doc>
	<str name="access">134:68/c:68</str>
	<str name="id">
		a338c9ed1e9a5abd900865b06bea55be/pages/132/134/0/0/68
	</str>
	<int name="uid">134</int>
</doc>
==================================

When the user from group 68 searches for words, solr shows him both 
instances of the same page. The customer (of course) says there should be 
only one.

We probably can get rid of the issue by setting groups to 68 for all 
content elements on this page.  But it would be hard to explain the 
customer why he should do so in future.

Is this a known issue? How to avoid it?

The issue is quite urgent :(

-- 
Dmitry Dulepov
TYPO3 CMS core & security teams member

Love gorillas.