HEADS UP: temporary compatibility issues with segment format

[Andrzej Bialecki <ab...@getopt.org>]

Hi,

This is to warn you that rev. 189747 introduces a compatibility issue.

This issue concerns segment data created AFTER the patches from issue 
NUTCH-54 have been applied (i.e. for segments created by the code 
between rev. 179436 and 189747).

Segments created with the code before rev. 179436 ARE compatible.

The only workaround for now is to discard such segments, when you decide 
to update your tree. If you need to process segment data, do it before 
updating the code.

This change was required to safeguard against similar situations in the 
future. Apologies if it causes you trouble.

-- 
Best regards,
Andrzej Bialecki     <><
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