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https://issues.apache.org/jira/browse/LUCENE-2824?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12972971#action_12972971
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Robert Muir commented on LUCENE-2824:
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oh, i think i see your idea Paul... so in the special case when we refill() at
the end of the file and we populate
less than the buffers length, we just have to copy to a shorter array so this
will work?
> optimizations for bufferedindexinput
> ------------------------------------
>
> Key: LUCENE-2824
> URL: https://issues.apache.org/jira/browse/LUCENE-2824
> Project: Lucene - Java
> Issue Type: Improvement
> Affects Versions: 3.1, 4.0
> Reporter: Robert Muir
> Attachments: LUCENE-2824.patch
>
>
> along the same lines as LUCENE-2816:
> * the readVInt/readVLong/readShort/readInt/readLong are not optimal here
> since they defer to readByte. for example this means checking the buffer's
> bounds per-byte in readVint instead of per-vint.
> * its an easy win to speed this up, even for the vint case: its essentially
> always faster, the only slower case is 1024 single-byte vints in a row, in
> this case we would do a single extra bounds check (1025 instead of 1024)
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