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https://issues.apache.org/jira/browse/SOLR-8737?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15167492#comment-15167492
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Timothy Potter commented on SOLR-8737:
--------------------------------------
Thanks for fixing [~janhoy]. As a work-around until this is released, users can
send in the mappings as a map, i.e.
{code}
curl -v -X PUT \
-H 'Content-type:application/json' \
--data-binary '{ "a": ["a","b","c"], "b": ["a","b","c"], "c":["a","b","c"]}' \
'http://localhost:8983/solr/techproducts/schema/analysis/synonyms/english'
{code}
> Managed synonym lists do not include the original term in the expand
> --------------------------------------------------------------------
>
> Key: SOLR-8737
> URL: https://issues.apache.org/jira/browse/SOLR-8737
> Project: Solr
> Issue Type: Bug
> Components: Schema and Analysis
> Affects Versions: 5.5
> Reporter: Jan Høydahl
> Assignee: Jan Høydahl
> Fix For: 5.5.1
>
> Attachments: SOLR-8737.patch
>
>
> Spinoff from discussion in solr-user list
> http://find.searchhub.org/document/8dfce8a277de0f2a
> The managed synonyms filter does not behave the same way as the original
> synonym filter when a list is added. The original synonyms filter with
> default {{expand=true}} produces the following map when parsing a line:
> Input:
> {noformat}
> a, b, c
> {noformat}
> Becomes:
> {noformat}
> a => a, b, c
> b => a, b, c
> c => a, b, c
> {noformat}
> But the managed filter excludes the original term in the mapping, so an input
> {{\["a", "b", "c"\]}} becomes:
> {noformat}
> a => b, c
> b => a, c
> c => a, b
> {noformat}
> This can also be seen in {{TestManagedSynonymFilterFactory.java}} where it is
> tested explicitly, while the tests for the file based synonymfilter expect an
> all-way expand including the original term.
> This causes a query for "a" to *not* match documents with the term "a", but
> only those with term "b" or "c".
> The offending line in {{ManagedSynonymFilterFactory}} is this
> {code}
> 188: treeTerms.remove(origTerm);
> {code}
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