Re: [HACKERS] pageinspect: Hash index support

On Fri, Feb 10, 2017 at 1:06 AM, Robert Haas <robertmhaas@gmail.com> wrote:

> Alright, committed with a little further hacking.

I did pull the latest code, and tried
Test:
====
create table t1(t int);
create index i1 on t1 using hash(t);
insert into t1 select generate_series(1, 10000000);

postgres=# SELECT spares FROM hash_metapage_info(get_raw_page('i1', 0));                                  spares

----------------------------------------------------------------------------{0,0,0,1,9,17,33,65,-127,1,1,0,1,-1,-1,-4,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0}

spares are showing negative numbers; I think the wrong type has been
chosen, seems it is rounding at 127, spares are defined as following
uint32 hashm_spares[HASH_MAX_SPLITPOINTS]; /* spare pages before each
splitpoint */

it should be always positive.

-- 
Thanks and Regards
Mithun C Y
EnterpriseDB: http://www.enterprisedb.com