SOLR hsin parse error

I am getting the following error when using the hsin function: org.apache.lucene.queryParser.ParseException: Cannot parse '(: AND val:"recip(hsin(12.9365,77.5447,lat,long,3963.20开发者_StackOverflow5,true), 1, 1, 0)")': Unknown function hsin in FunctionQuery('recip(hsin(12.9365,77.5447,lat,long,3963.205,true), 1, 1, 0)', pos=11)

Has anyone faced this issue? Any ideas how I can solve this? I am using solr version 1.4 and have not tried upgrading yet.

Thanks, Sapna

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hsin and other spatial functions are not available in Solr 1.4.x. Check the Solr wiki.

If you want this feature right now you could use a nightly build directly from the build server.