Hi Tom,
(11/06/11 2:01), Burton-West, Tom wrote:
According to the documentation on the Solr wiki page, setting the hl.fragsize parameter
to "0" indicates that the whole field value should be used (no fragmenting).
However the FastVectorHighlighter throws an exception
message fragCharSize(0) is too small. It must be 18 or higher.
java.lang.IllegalArgumentException: fragCharSize(0) is too small. It must be 18
or higher. at
org.apache.lucene.search.vectorhighlight.SimpleFragListBuilder.createFieldFragList(SimpleFragListBuilder.java:36)
at
org.apache.lucene.search.vectorhighlight.FastVectorHighlighter.getFieldFragList(FastVectorHighlighter.java:177)
at
org.apache.lucene.search.vectorhighlight.FastVectorHighlighter.getBestFragments(FastVectorHighlighter.java:166)
at
I noticed that in Solr 1268 there was an attempt to fix this problem but it
apparently did not work.
1) Is there any plan to implement a feature in FastVectorHighlighter that
would behave the same as the regular Highlighter, i.e. return the whole field
value when hl.fragsize=0?
There is SingleFragListBuilder for this purpose. Please see:
https://issues.apache.org/jira/browse/LUCENE-2464
2) Should I edit the wiki entry to indicate that the hl.fragsize=0 does
not work with FVH?
Yes, please!
3) Are there other parameters listed in the wiki that should have a note
indicating whether they apply to only the regular highlighter or the FVH?
FVH doesn't support (or makes no sense):
fragsize=0, mergeContiguous, maxAnalyzedChars, formatter,
simple.pre/simple.post,
fragmenter, highlightMultiTerm, regex.*
and FVH support requireFieldMatch but doesn't support per-field override for it.
If you would update wiki, it definitely be very helpful.
Thank you!
koji
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