Markus Jelsma created LUCENE-9591:
-------------------------------------

             Summary: StringIndexOutOfBoundsException in FastVectorHighlighter
                 Key: LUCENE-9591
                 URL: https://issues.apache.org/jira/browse/LUCENE-9591
             Project: Lucene - Core
          Issue Type: Bug
    Affects Versions: 8.6
            Reporter: Markus Jelsma


Just spotted this one. Solr throws the exception but the request is returned 
anyway. One highlighted snippet has garbled contents. 
{code:java}
2020-10-29 15:06:30.448 ERROR (qtp2119992687-25889) [c:collection_20200511 
s:shard4 r:core_node48 x:sitesearch_20200511_shard4_replica_t47] 
o.a.s.s.HttpSolrCall null:java.lang.StringIndexOutOfBoundsException: start 
568858, end 539731, length 539732

        at 
java.base/java.lang.AbstractStringBuilder.checkRangeSIOOBE(AbstractStringBuilder.java:1724)

        at 
java.base/java.lang.AbstractStringBuilder.substring(AbstractStringBuilder.java:1017)

        at java.base/java.lang.StringBuilder.substring(StringBuilder.java:85)

        at 
org.apache.lucene.search.vectorhighlight.BaseFragmentsBuilder.getFragmentSourceMSO(BaseFragmentsBuilder.java:204)

        at 
org.apache.lucene.search.vectorhighlight.BaseFragmentsBuilder.makeFragment(BaseFragmentsBuilder.java:175)

        at 
org.apache.lucene.search.vectorhighlight.BaseFragmentsBuilder.createFragments(BaseFragmentsBuilder.java:144)

        at 
org.apache.lucene.search.vectorhighlight.FastVectorHighlighter.getBestFragments(FastVectorHighlighter.java:186)

        at 
org.apache.solr.highlight.DefaultSolrHighlighter.doHighlightingByFastVectorHighlighter(DefaultSolrHighlighter.java:581)

        at 
org.apache.solr.highlight.DefaultSolrHighlighter.doHighlightingOfField(DefaultSolrHighlighter.java:531)

        at 
org.apache.solr.highlight.DefaultSolrHighlighter.doHighlighting(DefaultSolrHighlighter.java:478)

        at 
org.apache.solr.handler.component.HighlightComponent.process(HighlightComponent.java:172)


 {code}



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