Hi Geert, Thanks for responding! For the questions No.2 , yes the re-indexer is disabled. We do fire xdmp:document-set-collection on these documents on a regular basis. So, I am just curious if this API will take care of fragmentation for existing documents, since it internally rewrites the whole document.
Thanks, Durai. From: [email protected] [mailto:[email protected]] On Behalf Of Geert Josten Sent: Wednesday, September 16, 2015 4:19 PM To: MarkLogic Developer Discussion Subject: Re: [MarkLogic Dev General] Query on Fragmentation Hi Durai, Ad 1. There will always be a top-level fragment. Fragment root elements and their contents will be recorded as separate fragments. This works recursively, so a Citation in a Citation would get its own fragment, and the contents of the inner Citation would not be considered part of the same fragment. Ad 2. To my knowledge fragmentation changes are normally applied automatically by triggering a reindexation. Unless you have disabled that of course. Ad 3. There is a cts query that allows crossing fragment boundaries, but I don't think you'd normally need that. Kind regards, Geert From: <[email protected]<mailto:[email protected]>> on behalf of Pavadaidurai A <[email protected]<mailto:[email protected]>> Reply-To: MarkLogic Developer Discussion <[email protected]<mailto:[email protected]>> Date: Wednesday, September 16, 2015 at 12:30 PM To: MarkLogic Developer Discussion <[email protected]<mailto:[email protected]>> Subject: [MarkLogic Dev General] Query on Fragmentation Dear All, I have taken the below example from Marklogic documentation. I have couple of questions reg Fragmentation. I understand from below example that "Citation", will need to defined as the fragement root 1) Assuming that we few other elements under CitationSet besides Citation element, what happens to the Misc elemens? In other words, if I am using Fragment root, what happens to the left over elements in the document? 2) I understand that after setting Fragmentation rule, existing documents will remain unfragmented unless re-indexed (or re-loaded). Does xdmp:document-set-collection API, takes care of fragmenting the document. I am asking this question because xdmp:document-set-collection API internally rewrites the document into the database. 3) Is there anyway to find out if a given document is fragmented or not? <CitationSet> <Citation>citation1</Citation> <Citation>citation2</Citation> <Citation>citation3</Citation> <Citation>citation4</Citation> <Citation>citation5</Citation> <Misc>misc1</ Misc> <Misc>misc2</ Misc> <Misc>misc3</ Misc> <CitationSet/> Fragment Roots<https://docs.marklogic.com/guide/admin/fragments#id_34807> If a document contains many instances of an XML structure that share a common element name, then these structures make sensible fragments. With MarkLogic Server, you can use this common element name as a fragment root. The following diagram shows an XML document rooted at <CitationSet> that contains many instances of a <Citation> node. Each <Citation> node contains further XML and averages between 15K and 20K in size. Based on this information, <Citation> is a sensible element to use as a fragment root: [https://docs.marklogic.com/media/apidoc/8.0/guide/admin/fragments/fragments-1.gif] Thanks, Durai. **************** CAUTION - Disclaimer ***************** This e-mail contains PRIVILEGED AND CONFIDENTIAL INFORMATION intended solely for the use of the addressee(s). If you are not the intended recipient, please notify the sender by e-mail and delete the original message. Further, you are not to copy, disclose, or distribute this e-mail or its contents to any other person and any such actions are unlawful. This e-mail may contain viruses. Infosys has taken every reasonable precaution to minimize this risk, but is not liable for any damage you may sustain as a result of any virus in this e-mail. You should carry out your own virus checks before opening the e-mail or attachment. Infosys reserves the right to monitor and review the content of all messages sent to or from this e-mail address. Messages sent to or from this e-mail address may be stored on the Infosys e-mail system. ***INFOSYS******** End of Disclaimer ********INFOSYS***
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