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https://issues.apache.org/jira/browse/LUCENE-3738?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13231297#comment-13231297
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Robert Muir commented on LUCENE-3738:
-------------------------------------
Well that differs with the title of the issue (consistency with vInt).
I don't see how we can avoid negative vints. I think its ok to be inconsistent
with vLong,
but it should not be something we assert only at read-time. It should be
asserted on write
so that problems are found immediately.
> Be consistent about negative vInt/vLong
> ---------------------------------------
>
> Key: LUCENE-3738
> URL: https://issues.apache.org/jira/browse/LUCENE-3738
> Project: Lucene - Java
> Issue Type: Bug
> Reporter: Michael McCandless
> Fix For: 3.6, 4.0
>
> Attachments: LUCENE-3738.patch, LUCENE-3738.patch
>
>
> Today, write/readVInt "allows" a negative int, in that it will encode and
> decode correctly, just horribly inefficiently (5 bytes).
> However, read/writeVLong fails (trips an assert).
> I'd prefer that both vInt/vLong trip an assert if you ever try to write a
> negative number... it's badly trappy today. But, unfortunately, we sometimes
> rely on this... had we had this assert in 'since the beginning' we could have
> avoided that.
> So, if we can't add that assert in today, I think we should at least fix
> readVLong to handle negative longs... but then you quietly spend 9 bytes
> (even more trappy!).
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