Hi Guys,
In the File Formats web page
(http://lucene.apache.org/java/2_3_0/fileformats.html) there is section
describing Segments File, where we read:
Segments --> Format, Version, NameCounter, ...
...
Format is -1 as of Lucene 1.4 and -3
(SemgentInfos.FORMAT_SINGLE_NORM_FILE) as of Lucene 2.1.
...
On my opinion the last sentence is not completely right. I mean it
should contain addition somthing like this:
1) "and -4 (SemgentInfos.FORMAT_SHARED_DOC_STORE) as of Lucene 2.3."
or like this:
2) "and as of Lucene 2.3 -4 (SemgentInfos.FORMAT_SHARED_DOC_STORE) in
cases when shared stored fields and term vectors exist or -3
(SemgentInfos.FORMAT_SINGLE_NORM_FILE) when no sharing exists."
So my question is what of the two suggestions is correct?
According to my tests with our IndexRecoverer tool the 1) is correct.
Here I will have to mention what does this tool. It creates segments
file out of given set of segments. I did not made a lot of tests yet but
in one single case when I created segments file for a segments set that
does not contain any shared data when I use
Format=SemgentInfos.FORMAT_SINGLE_NORM_FILE Luke can not open it using
Lucene 2.3, but when Format=SemgentInfos.FORMAT_SHARED_DOC_STORE it
opens it correctly.
Best Regards,
Ivan
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