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https://issues.apache.org/jira/browse/HIVE-9556?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14317479#comment-14317479
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Jason Dere commented on HIVE-9556:
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Would like to gauge the level of demand for this one. Obviously this would be
of interest to some folks, but would like to hear from others if this is too
specific to add as a built-in.
If it is too specific, would it be a candidate for hive-contrib?
> create UDF to measure strings similarity using Levenshtein Distance algo
> ------------------------------------------------------------------------
>
> Key: HIVE-9556
> URL: https://issues.apache.org/jira/browse/HIVE-9556
> Project: Hive
> Issue Type: Improvement
> Components: UDF
> Reporter: Alexander Pivovarov
> Assignee: Alexander Pivovarov
> Attachments: HIVE-9556.1.patch, HIVE-9556.2.patch
>
>
> algorithm description http://en.wikipedia.org/wiki/Levenshtein_distance
> {code}
> --one edit operation, greatest str len = 12
> str_sim_levenshtein('Test String1', 'Test String2') = 1 - 1 / 12 = 0.91666667
> {code}
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