Mike Drob created SOLR-13190:
--------------------------------
Summary: Fuzzy search treated as server error instead of client
error when terms are too complex
Key: SOLR-13190
URL: https://issues.apache.org/jira/browse/SOLR-13190
Project: Solr
Issue Type: Bug
Security Level: Public (Default Security Level. Issues are Public)
Components: search
Affects Versions: master (9.0)
Reporter: Mike Drob
Assignee: Mike Drob
We've seen a fuzzy search end up breaking the automaton and getting reported as
a server error. This usage should be improved by
1) reporting as a client error, because it's similar to something like too many
boolean clauses queries in how an operator should deal with it
2) report what field is causing the error, since that currently must be deduced
from adjacent query logs and can be difficult if there are multiple terms in
the search
This trigger was added to defend against adversarial regex but somehow hits
fuzzy terms as well, I don't understand enough about the automaton mechanisms
to really know how to approach a fix there, but improving the operability is a
good first step.
relevant stack trace:
{noformat}
org.apache.lucene.util.automaton.TooComplexToDeterminizeException:
Determinizing automaton with 13632 states and 21348 transitions would result in
more than 10000 states.
at
org.apache.lucene.util.automaton.Operations.determinize(Operations.java:746)
at
org.apache.lucene.util.automaton.RunAutomaton.<init>(RunAutomaton.java:69)
at
org.apache.lucene.util.automaton.ByteRunAutomaton.<init>(ByteRunAutomaton.java:32)
at
org.apache.lucene.util.automaton.CompiledAutomaton.<init>(CompiledAutomaton.java:247)
at
org.apache.lucene.util.automaton.CompiledAutomaton.<init>(CompiledAutomaton.java:133)
at
org.apache.lucene.search.FuzzyTermsEnum.<init>(FuzzyTermsEnum.java:143)
at org.apache.lucene.search.FuzzyQuery.getTermsEnum(FuzzyQuery.java:154)
at
org.apache.lucene.search.MultiTermQuery$RewriteMethod.getTermsEnum(MultiTermQuery.java:78)
at
org.apache.lucene.search.TermCollectingRewrite.collectTerms(TermCollectingRewrite.java:58)
at
org.apache.lucene.search.TopTermsRewrite.rewrite(TopTermsRewrite.java:67)
at
org.apache.lucene.search.MultiTermQuery.rewrite(MultiTermQuery.java:310)
at
org.apache.lucene.search.IndexSearcher.rewrite(IndexSearcher.java:667)
at org.apache.lucene.search.IndexSearcher.search(IndexSearcher.java:442)
at
org.apache.solr.search.SolrIndexSearcher.buildAndRunCollectorChain(SolrIndexSearcher.java:200)
at
org.apache.solr.search.SolrIndexSearcher.getDocListNC(SolrIndexSearcher.java:1604)
at
org.apache.solr.search.SolrIndexSearcher.getDocListC(SolrIndexSearcher.java:1420)
at
org.apache.solr.search.SolrIndexSearcher.search(SolrIndexSearcher.java:567)
at
org.apache.solr.handler.component.QueryComponent.doProcessUngroupedSearch(QueryComponent.java:1435)
at
org.apache.solr.handler.component.QueryComponent.process(QueryComponent.java:374)
at
org.apache.solr.handler.component.SearchHandler.handleRequestBody(SearchHandler.java:298)
at
org.apache.solr.handler.RequestHandlerBase.handleRequest(RequestHandlerBase.java:199)
at org.apache.solr.core.SolrCore.execute(SolrCore.java:2559)
{noformat}
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