Details
Major Description
Solr is returning wrong highlights when I have a date range query with wild card in the end range. For example my query q is
(porta)+activatedate:[* TO 2014-04-24T09:55:00Z]+expiredate:[2014-04-24T09:55:00Z TO *]
In the above query activatedate, expiredate are date fields. Their definition in schema file is as follows
<field name="activatedate" type="date" indexed="true" stored="false" omitNorms="true"/> <field name="expiredate" type="date" indexed="true" stored="false" omitNorms="true"/>
In the query result I am getting wrong highlighting information. Only highlighting result is show below
"highlighting": { "article:3605": { "title": [ "The <em>creative</em> <em>headline</em> of this <em>story</em> <em>really</em> <em>says</em> it <em>all</em>" ], "summary": [ "<em>Etiam</em> <em>porta</em> <em>sem</em> <em>malesuada</em> <em>magna</em> <em>mollis</em> <em>euismod</em> <em>aenean</em> <em>eu</em> <em>leo</em> <em>quam</em>. <em>Pellentesque</em> <em>ornare</em> <em>sem</em> <em>lacinia</em> <em>quam</em>." ] }, "article:3604": { "title": [ "The <em>creative</em> <em>headline</em> of this <em>story</em> <em>really</em> <em>says</em> it <em>all</em>" ], "summary": [ "<em>Etiam</em> <em>porta</em> <em>sem</em> <em>malesuada</em> <em>magna</em> <em>mollis</em> <em>euismod</em> <em>aenean</em> <em>eu</em> <em>leo</em> <em>quam</em>. <em>Pellentesque</em> <em>ornare</em> <em>sem</em> <em>lacinia</em> <em>quam</em>.." ] } }
It should highlight only story word but it is highlighting lot other words also. What I noticed that this happens only if I have a wildcard * in the end range. If I change the above query and set a fixed date in the end range instead of * then solr return correct highlights. Modified query is shown below -
(porta)+activatedate:[* TO 2014-04-24T09:55:00Z]+expiredate:[2014-04-24T09:55:00Z TO 3014-04-24T09:55:00Z]
I guess its a bug in SOLR. If I use filter query fq instead of normal query q then highlighting result is OK for both queries.
Update
If I use a specific date instead of * still it returns wrong highlights. This time it highlights numbers also. Say I am searching for the word math then it also highlights number with math. As for example if title of my article is Mathematics 1234 then it highlights 1234 also with math.