I can’t tell exactly either, but your observations could be right that it only 
occurs with word and value lexicon lookups. Those start with values, and only 
look at fragments later (if you provide a cts:query for instance). A cts:search 
starts with fragments, so easier to ignore deleted fragments from the start..

Again, this is a rare anomaly, only observed with admin user. Normal 
applications should never run with admin user. It is a good practice to always 
look for a customized security model that hands out as little privileges as 
possible to users directly..

Cheers,
Geert

From: 
<[email protected]<mailto:[email protected]>>
 on behalf of Andreas Hubmer 
<[email protected]<mailto:[email protected]>>
Reply-To: MarkLogic Developer Discussion 
<[email protected]<mailto:[email protected]>>
Date: Monday, July 13, 2015 at 5:26 PM
To: MarkLogic Developer Discussion 
<[email protected]<mailto:[email protected]>>
Subject: Re: [MarkLogic Dev General] element-word-match

Can you elaborate on "Deleted fragments are only visible to admin" ? In what 
case are deleted fragments visible to the admin?
So far I haven't seen deleted fragments in query results, except for the 
lexicon lookup with cts:element-word-match. In two additional tests I've just 
seen that
* words of deleted fragments are returned by cts:element-words
* words of deleted fragments are not considered in estimations of search result 
sizes: xdmp:estimate(cts:search(doc(), 
cts:element-word-query(xs:QName("title"), "Test"), "unfiltered"))

So, in the case of an unfiltered query deleted fragments are not visible any 
more, but in the case of lexicon lookups the deleted fragments seem to be 
visible. This is still puzzling to me.

Cheers,
Andreas

2015-07-13 16:14 GMT+02:00 Geert Josten 
<[email protected]<mailto:[email protected]>>:
Deleted fragments are only visible to admin, as security is bypassed for that 
user. That also gives you a slight performance gain. As a general rule of 
thumb, never run tests as admin..

Cheers,
Geert

From: 
<[email protected]<mailto:[email protected]>>
 on behalf of Andreas Hubmer 
<[email protected]<mailto:[email protected]>>
Reply-To: MarkLogic Developer Discussion 
<[email protected]<mailto:[email protected]>>
Date: Monday, July 13, 2015 at 4:05 PM
To: MarkLogic Developer Discussion 
<[email protected]<mailto:[email protected]>>
Subject: Re: [MarkLogic Dev General] element-word-match

xdmp:merge with <merge-timestamp>{xdmp:request-timestamp()}</merge-timestamp> 
does not make a difference on my local Windows machine. Afterwards there are 
still deleted fragments in the database.

I've also tested it on a Linux cluster and there xdmp:merge with 
<merge-timestamp>{xdmp:request-timestamp()}</merge-timestamp> does indeed 
remove the deleted fragments. Afterwards cts:element-word-match returns the 
expected empty list.

Nevertheless I am surprised that cts:element-word-match returns values from 
deleted fragments.

Cheers,
Andreas

2015-07-13 15:42 GMT+02:00 Christopher Hamlin 
<[email protected]<mailto:[email protected]>>:
On Mon, Jul 13, 2015 at 9:30 AM, Andreas Hubmer
<[email protected]<mailto:[email protected]>> wrote:
> Hi,
>
>> I think in recent versions of ML it's the case that calling merge won¹t
>> necessarily merge right down to 0 deleted fragments?
> Yes, that seems to be the case. Even long after calling xdmp:merge the
> deleted fragments exist.

It won't normally discard deleted fragments right away:

https://help.marklogic.com/Knowledgebase/Article/View/193/0/unable-to-merge-all-deleted-fragments-on-forest-with-32gb-max-merge-size
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--
Andreas Hubmer
IT Consultant

EBCONT enterprise technologies GmbH
Millennium Tower
Handelskai 94-96
A-1200 Vienna

Mobile: +43 664 60651861
Fax: +43 2772 512 69-9
Email: [email protected]<mailto:[email protected]>
Web: http://www.ebcont.com

OUR TEAM IS YOUR SUCCESS

UID-Nr. ATU68135644
HG St.Pölten - FN 399978 d
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