 | | | Exception: cannot determine sort type | Exception: cannot determine sort type 2004-12-22 - By Kauler, Leto S
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We have been implementing Lucene as the datasource for our
website--Lucene is exposed through a java web service which our ASP
pages query and process. So far things have been going very well and in
general tests everything has been fine.
Interestingly though, under a small server stress test (up to 2
connections/second) every second or third query has been producing the
error:
"java.lang.RuntimeException  : no terms in field Title_Sort - cannot
determine sort type"
Title_Sort is a sort-specific field (Store?lse, Index=true,
Tokenise?lse). I do not have access to the actual Lucene-calling
code, but I do not believe that the creation of the SortField defines a
type (so just defaults to AUTO).
I dug up this message from the list where Erik suggested to define a
specific type in the SortField, which in this case solved the original
poster's problem.
<http://nagoya.apache.org/eyebrowse/ReadMsg?listName=lucene-user@(protected)
.apache.org&msgId26050>
We could specify the sort type as String but we do have some Date fields
too. Are dates actually indexed as strings?
I am wondering why this exception might occur when the server/index is
under load. I do realise there are many 'variables in the equation', so
there probably is not an easy answer to this.
Regards, --Leto
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