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https://issues.apache.org/jira/browse/COUCHDB-887?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12909103#action_12909103
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Nuutti Kotivuori commented on COUCHDB-887:
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The *current* semantics of offset are such, that there is really no point in
specifying it, ever, as one can just supply a smaller bytes value to get the
same effect.
If offset is simply substracted from LogFileSize, then offset *must* atleast
default to bytes, or otherwise the result is always eof.
> _log handler has very odd semantics for bytes/offset, probably a bug
> --------------------------------------------------------------------
>
> Key: COUCHDB-887
> URL: https://issues.apache.org/jira/browse/COUCHDB-887
> Project: CouchDB
> Issue Type: Bug
> Components: HTTP Interface
> Affects Versions: 0.11, 0.11.1, 0.11.2, 1.0, 1.0.1
> Reporter: Nuutti Kotivuori
> Priority: Trivial
> Attachments: couch_log.erl.diff
>
>
> The _log method for couchdb servers has query arguments "bytes" and "offset",
> but they seem to behave really weirdly. If offset >= bytes, an eof error is
> returned - otherwise offset is just substracted from bytes and the request
> behaves identically otherwise.
> A simple fix to the expected behaviour is included - offset counts backwards
> from bytes.
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