I'm reading through the docs in http://community.marklogic.com/pubs/5.0/books/performance.pdf and it says :
XPath predicates that cross fragment boundaries are unsearchable (cannot use indexes). For example, if a document is fragmented at the b element, then you should make sure predicates do not cross the b boundary. Therefore, the following expression: /a/b[c="1"]/../d will run faster than the following expression: /a[b/c="1"]/d How do you determine / modify a document's fragmentation boundary ? Regards, Danny
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