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https://issues.apache.org/jira/browse/LUCENE-5156?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14083065#comment-14083065
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Robert Muir commented on LUCENE-5156:
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I also think its ok if we fix the codec to have a faster seekExact (not by
copying stuff into a large array on the first call though, just by fixing
datastructure / how it access data).
That would solve the actual problem here you have in a clean way.
> CompressingTermVectors termsEnum should probably not support seek-by-ord
> ------------------------------------------------------------------------
>
> Key: LUCENE-5156
> URL: https://issues.apache.org/jira/browse/LUCENE-5156
> Project: Lucene - Core
> Issue Type: Bug
> Reporter: Robert Muir
> Fix For: 4.5, 5.0
>
> Attachments: LUCENE-5156.patch
>
>
> Just like term vectors before it, it has a O(n) seek-by-term.
> But this one also advertises a seek-by-ord, only this is also O(n).
> This could cause e.g. checkindex to be very slow, because if termsenum
> supports ord it does a bunch of seeking tests. (Another solution would be to
> leave it, and add a boolean so checkindex never does seeking tests for term
> vectors, only real fields).
> However, I think its also kinda a trap, in my opinion if seek-by-ord is
> supported anywhere, you kinda expect it to be faster than linear time...?
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