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https://issues.apache.org/jira/browse/SOLR-6297?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14134412#comment-14134412
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Steve Molloy commented on SOLR-6297:
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Sorry for not replying sooner, but yes, I applied the patch to our codebase and
it seems to fix the issue. Thanks.
> Distributed spellcheck with WordBreakSpellchecker can lose suggestions
> ----------------------------------------------------------------------
>
> Key: SOLR-6297
> URL: https://issues.apache.org/jira/browse/SOLR-6297
> Project: Solr
> Issue Type: Bug
> Affects Versions: 4.9
> Reporter: Steve Molloy
> Assignee: James Dyer
> Fix For: 4.11
>
> Attachments: SOLR-6297.patch, SOLR-6297.patch, SOLR-6297.patch,
> SOLR-6297.patch
>
>
> When performing a spellcheck request in distributed environment with the
> WordBreakSpellChecker configured, the shard response merging logic can lose
> some suggestions. Basically, the merging logic ensures that all shards marked
> the query as not being correctly spelled, which is good, but also expects all
> shards to return some suggestions, which isn't necessarily the case. So if
> shard 1 returns 10 suggestions but shard 2 returns none, the final result
> will contain no suggestions because the term has suggestions from only 1 of 2
> shards.
> This isn't the case with the DirectSolrSpellChecker which works properly.
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