While coding up a front-end to paginate over a set of search results, I think I found a bug whereby the result set is incorrectly segmented as a function of the sort key, the start index, and the row count. In the output that follows, I am using the field ctime for sort order, and the value of delta is simply the difference between subsequent ctime values (which I was checking in order to debug what was happening).
First, lets ask for just the first result: GET > /solr/clips/select?q=user%3Ad33af3cca29a43e63e8f6a52dfdd99a61f7b7906%20AND%20private%3A1&start=0&rows=1&wt=json&sort=ctime > title: weather flagler beach - Google Search ctime: 98701733411258 delta: 0 ---------- Now, let's do the same query, but get the top three instead: GET > /solr/clips/select?q=user%3Ad33af3cca29a43e63e8f6a52dfdd99a61f7b7906%20AND%20private%3A1&start=0&rows=3&wt=json&sort=ctime > title: Amazon.com: knives ctime: 98701733349673 delta: 0 ---------- title: weather flagler beach - Google Search ctime: 98701733411258 delta: 61585 ---------- title: Bartholdi on spacefilling curves ctime: 98701733465867 delta: 54609 ---------- Notice that we have a new 'top' result. Finally, let's get all of the results by setting row to something large, but I'll only show the first result because that's all you need to see: GET > /solr/clips/select?q=user%3Ad33af3cca29a43e63e8f6a52dfdd99a61f7b7906%20AND%20private%3A1&start=0&rows=1000&wt=json&sort=ctime > title: HTTP cookie - Wikipedia, the free encyclopedia ctime: 98701587317266 delta: 0 ---------- We now get a record that we haven't seen yet. I can confirm that when I get all of the results, they are in the properly sorted order. I also believe that any of my smaller result sets are also in proper sort order. However, it also appears that when I ask for a specific number of row with a non-zero start start value, then the start index is not handled correctly. FWIW, these results don't' have anything to do with the client library because I reproduced them over the REST interface. Any ideas? -- GWF
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