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From "John Wang" <>
Subject Re: changing index format
Date Fri, 04 Jul 2008 00:05:32 GMT
Hi Michael:

    What is the plan/timeline for supporting flexible indexing?



On Wed, Jun 25, 2008 at 3:40 AM, Michael McCandless <> wrote:

> John Wang wrote:
>      The problem I am having is stated below, I don't know how to add the
>> minDoc and maxDoc values to the index while keeping backward compatibility.
> Unfortunately, TermInfo file format just isn't extensible at the moment, so
> I think for now you'll have to break backward compatibility if you really
> want to store these new fields in the _X.tis/.tii files.
> EG here is another recent example of wanting to alter what's stored in
> TermInfo:
> For flexible indexing we clearly need to fix this, so that any "plugin" in
> the indexing chain could stuff whatever it wants into the TermInfo, and also
> override how TermInfo is read/written.  Even the things we now store in
> TermInfo should be optional.  EG say you choose not to store locations (prx)
> for a given field.  Then, you would not need the long proxPointer.
> Mike
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