[ https://issues.apache.org/jira/browse/LUCENENET-157?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Doug Sale updated LUCENENET-157:
--------------------------------

    Summary: SegmentMerger.AddIndexed expects *Reader.GetFieldNames to return a 1-dimensional ICollection  (was: SegmentMerger.AddIndexed() performs an illegal cast)

> SegmentMerger.AddIndexed expects *Reader.GetFieldNames to return a 1-dimensional ICollection
> --------------------------------------------------------------------------------------------
>
>                 Key: LUCENENET-157
>                 URL: https://issues.apache.org/jira/browse/LUCENENET-157
>             Project: Lucene.Net
>          Issue Type: Bug
>         Environment: any/all
>            Reporter: Doug Sale
>         Attachments: AnotherPatch.rar, SegmentMerger.patch
>
>   Original Estimate: 0.17h
>  Remaining Estimate: 0.17h
>
> This is an error introduced via the JLCA (automated porting process) and stems from the use of System.Collections.Hashtable in the role of java.util.HashSet.
> SegmentMerger.AddIndexed() is passed a Hashtable as its 3rd argument, but treats it as if it were a 1-dimensional collection (e.g., IList).
>  

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