overlapping onDeckSearchers message
I have a solr index that hasn't had many problems recently but I had the logs open and noticed this a lot during indexing: [16:23:34.086] PERFORMANCE WARNING: Overlapping onDeckSearchers=2 Not sure what it means, google didn't come back with much.
Re: overlapping onDeckSearchers message
On 11/3/07, Brian Whitman [EMAIL PROTECTED] wrote: I have a solr index that hasn't had many problems recently but I had the logs open and noticed this a lot during indexing: [16:23:34.086] PERFORMANCE WARNING: Overlapping onDeckSearchers=2 That means that one searcher hasn't yet finished warming in the background, and a commit was just done and another searcher started warming. -Yonik
RE: FW: Score customization
I guess I was not clear... I understand that if I use FunctionQuery, it's result value will return as the score, instead of the similarity. Am I right? From: [EMAIL PROTECTED] on behalf of Yonik Seeley Sent: Wed 10/31/2007 7:21 PM To: solr-user@lucene.apache.org Subject: Re: FW: Score customization On 10/31/07, Victoria Kaganski [EMAIL PROTECTED] wrote: Does FunctionQuery actually override the default similarity function? If it does, how can I still access the similarity value? FunctionQuery returns the *value* of a field (or a function of it) as the value for a query - it does not use Similarity at all. If you put a FunctionQuery in a BooleanQuery with other queries (like normal relevance queries), the scores will be added together. If you use a BoostedQuery, the FunctionQuery score will be multiplied by the normal relevance score. -Yonik
Re: FW: Score customization
On 11/3/07, Victoria Kaganski [EMAIL PROTECTED] wrote: I guess I was not clear... I understand that if I use FunctionQuery, it's result value will return as the score, instead of the similarity. Am I right? Only for the FunctionQuery part... it's not an all or nothing thing. Let me give you a specific example in Solr Query syntax: +text:spider man~100 _val_:popularity This query will result in the full-text relevance score (yes, using similarity) of the first part added to the value of the popularity field. Try some examples out and let us know if you don't get what you expect. -Yonik From: [EMAIL PROTECTED] on behalf of Yonik Seeley Sent: Wed 10/31/2007 7:21 PM To: solr-user@lucene.apache.org Subject: Re: FW: Score customization On 10/31/07, Victoria Kaganski [EMAIL PROTECTED] wrote: Does FunctionQuery actually override the default similarity function? If it does, how can I still access the similarity value? FunctionQuery returns the *value* of a field (or a function of it) as the value for a query - it does not use Similarity at all. If you put a FunctionQuery in a BooleanQuery with other queries (like normal relevance queries), the scores will be added together. If you use a BoostedQuery, the FunctionQuery score will be multiplied by the normal relevance score. -Yonik
RE: FW: Score customization
Oh, I finally understand. Now I need to know whether the FunctionQuery result is considered during the results sorting. That is, are search results sorted according to the sum of the similarity and the FunctionQuery value or according to similarity only? From: [EMAIL PROTECTED] on behalf of Yonik Seeley Sent: Sat 11/3/2007 11:21 PM To: solr-user@lucene.apache.org Subject: Re: FW: Score customization On 11/3/07, Victoria Kaganski [EMAIL PROTECTED] wrote: I guess I was not clear... I understand that if I use FunctionQuery, it's result value will return as the score, instead of the similarity. Am I right? Only for the FunctionQuery part... it's not an all or nothing thing. Let me give you a specific example in Solr Query syntax: +text:spider man~100 _val_:popularity This query will result in the full-text relevance score (yes, using similarity) of the first part added to the value of the popularity field. Try some examples out and let us know if you don't get what you expect. -Yonik From: [EMAIL PROTECTED] on behalf of Yonik Seeley Sent: Wed 10/31/2007 7:21 PM To: solr-user@lucene.apache.org Subject: Re: FW: Score customization On 10/31/07, Victoria Kaganski [EMAIL PROTECTED] wrote: Does FunctionQuery actually override the default similarity function? If it does, how can I still access the similarity value? FunctionQuery returns the *value* of a field (or a function of it) as the value for a query - it does not use Similarity at all. If you put a FunctionQuery in a BooleanQuery with other queries (like normal relevance queries), the scores will be added together. If you use a BoostedQuery, the FunctionQuery score will be multiplied by the normal relevance score. -Yonik
RE: FW: Score customization
: Now I need to know whether the FunctionQuery result is considered during : the results sorting. That is, are search results sorted according to the : sum of the similarity and the FunctionQuery value or according to : similarity only? a function query in a larger query contributes to the score just like any other clause ... if you sort by score, you are sorting by the *whole* score ... if you sort by some other field then the *whole* score is irrelevant. -Hoss
Re: overlapping onDeckSearchers message
: [16:23:34.086] PERFORMANCE WARNING: Overlapping onDeckSearchers=2 I've FAQed this with all the details i can think of ... some of which may be in my imagination, so peer-review is appreciated... http://wiki.apache.org/solr/FAQ#head-1133543d05c65f889b25b85b3c7aaa17f532032a -Hoss
