OK, one more issue report. I originally thought it's a bug in my patch adding parallel builds for GIN indexes, but it turns out it happens even with serial builds on master ...
If I build any GIN index, and then do gin_index_parent_check() on it, I get this error: create index jsonb_hash on messages using gin (msg_headers jsonb_path_ops); select gin_index_parent_check('jsonb_hash'); ERROR: index "jsonb_hash" has wrong tuple order, block 43932, offset 328 I did try investigating usinng pageinspect - the page seems to be the right-most in the tree, judging by rightlink = InvalidBlockNumber: test=# select gin_page_opaque_info(get_raw_page('jsonb_hash', 43932)); gin_page_opaque_info ---------------------- (4294967295,0,{}) (1 row) But gin_leafpage_items() apparently only works with compressed leaf pages, so I'm not sure what's in the page. In any case, the index seems to be working fine, so it seems like a bug in this patch. regards -- Tomas Vondra EnterpriseDB: http://www.enterprisedb.com The Enterprise PostgreSQL Company