Hi all,

we have a use case, where we would like to make a MoreLikeThis Query Parser request across two collections (of multiple shards each) in a SolrCloud. The two collections share the same index schema.
The request looks like
q={!mlt qf=field1,field2}ID&collection=collection1,collection2

It results in an error message "Error completing MLT request. Could not fetch document with id [ID]" from one of the shards of the collection not containing the document with id ID.

So I guess, while the MoreLikeThis Query Parser is "SolrCloud aware" and can handle MLT requests across multiple shards of one collection (works fpr us), it can not deal with multiple collections? Or are we missing something? Is there a way to send one MoreLikeThis Query Parser request to multiple SolrCloud collections?

Thanks for any help,
Till

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Till Kinstler
Verbundzentrale des Gemeinsamen Bibliotheksverbundes (VZG)
Platz der Göttinger Sieben 1, D 37073 Göttingen
[email protected], http://www.gbv.de/

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