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From Chris Hostetter <>
Subject Re: Tracking down the input that hits an analysis chain bug
Date Fri, 10 Jan 2014 16:23:34 GMT

: The problem manifests as this sort of thing:
: Jan 3, 2014 6:05:33 PM org.apache.solr.common.SolrException log
: SEVERE: java.lang.IllegalArgumentException: startOffset must be
: non-negative, and endOffset must be >= startOffset,
: startOffset=-1811581632,endOffset=-1811581632

Is there a stack trace in the log to go along with that?  there should be.

My suspicion is that since analysis errors like these are 
RuntimeExceptions, they may not be getting caught & re-thrown with as much 
context as they should -- so by the time they get logged (or returned to 
the client) there isn't any info about the problematic field value, let 
alone the unqiueKey.

If we had a test case that reproduces (ie: with a mock tokenfilter that 
always throws a RuntimeException when a token matches "fail_now" or 
something) we could have some tests that assert indexing a doc with that 
token results in a useful error -- which should help ensure that useful 
error also gets logged (although i don't think we don't really have any 
easy way of asserting specific log messages at the moment)


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