Re: [HACKERS] Arbitrary tuple size

>
>I knew there had to be a reason that some tests where BLCKSZ/2 and some
>BLCKSZ.
>
>Added to TODO:
>
> * Allow index on tuple greater than 1/2 block size
>
>Seems we have to allow columns over 1/2 block size for now. Most people
>wouln't index on them.

Since an index header page has to point to at least 2 other leaf or
header pages, it stores at least 2 keys per page.

I would alter the todo to say:

* fix btree to give a useful elog when key > 1/2 (page - overhead) and not
abort

to fix the:
>
> FATAL 1: btree: failed to add item to the page
>

A key of more than 4k will want a more efficient index type than btree
for such data anyway.

Andreas